That's where we're different. I take into account that the appearance of something can be misleading. It might turn out that it wasn't misleading, of course, but I'm not willing to make that judgment until I get more information, try to understand their perspective.
Why getting GM title is not possible at the age 30+? Is it a fact?

Oh I see, so I'm a knee-jerk slap-dash idiot. lol No, I say it's stupid because even two seconds of reflection persuades me that the whole kit and caboodle is completely inane and asinine. It is the perfect topic for some pop-psych self-help crapola (the latest specious nonsense off the rack).

The "10,000" hours concept is a catch-phrase way of pointing out the obvious:
Those who excel at what they do have likely spent a lot of time doing it.
And of course you can get to GM if you start at thirty years old. It just requires study and practice, like anyone else who wants to be a GM.
Most people simply don't have the time, or the motivation, to put in all the time and training needed to skyrocket your ELO to such a high level. Resources help, too. A person who just plays and experiments and is self-taught will likely improve at a slower rate than someone who takes daily two-hour lessons from a master-level coach.
You get out of it what you put into it.

The "10,000" hours concept is a catch-phrase way of pointing out the obvious:
Those who excel at what they do have likely spent a lot of time doing it.
Well, of course I'm exceedingly skeptical of the rest of your post (to put it mildly)...but I definitely agree with this summation.

You're basically just saying that it's wrong because it's simply not intuitive to you. You're using a different word choice, but that's what you're basing it on. It's just very dangerous to do. It's really easy to find something unintuitive from your lens of perception. That's fine for suspicions, but not for outright judgments in my opinion.

Read that makikihustle quote, Looby. That says it all. There's nothing "intuitive" (or substantive) to be gleaned from that 10000-hour business; it just takes a bit of very ordinary common sense and dresses it up with the trappings of science.

Things that seem unintuitive through our minds can often be true. Because we are only viewing things through a limited amount of experience and information. I have suspicions of the 10,000 hour rule, why the number would be so specific, but it's just not enough reason for me to judge without finding more information (I won't believe it without enough information either). Maybe in some strange way 10,000 ends up as the common number, even though I couldn't understand how that might happen.

At age 30 most up us stop going to the clubs and much and slow down drinking. Most likely found a mate to spend the rest of your life with now. So figure you are now more of a homebody. Best game for a homebody is chess. And with the additional you used to waste can be spent studying and practice. And where the younger player may not be patient in a game the older player most like will be when it gets tough.

Then explain how these players have 50 - 100 games on going on the site. If it is something you want to do you will make the time. Even more so when you get older. Look at the people walking around with these phones like they are connenct to their ear. 20 years ago you would see that at all. In some of those they have the ability to go online and research. Not this is really helpful if you afre driven by publc transportation by train or bus.

If you study chess for 30 hours a day for the next ten years then the GM title should be no trouble at all. For those who say you can't study 30 hours a day, Its difficult to study 30 hours a day but not totally impossible. You just need to be on a jet traveling west. By the time you get to be GM you will have logged a lot of frequent flyer miles.
um... There are only 24 hrs. in day, not 30
lol

Not sure why being grandmaster champion is relevant to anything other than the title. Objectively I play games for purposes other than the game itself and because the game is fun. Chess is a good tool to combat stress, not create it. Ratings are only useful as allowing specifically accurate games for both players, other than that, who cares? So so and so is a champion, how does this help me personally? It doesnt. I find more and more as I age that what is important is self preservation by minimizing stress and eliminating bs. So that is a goal of mine and chess is one tool of many to do just that.

If you study chess for 30 hours a day for the next ten years then the GM title should be no trouble at all. For those who say you can't study 30 hours a day, Its difficult to study 30 hours a day but not totally impossible. You just need to be on a jet traveling west. By the time you get to be GM you will have logged a lot of frequent flyer miles.
um... There are only 24 hrs. in day, not 30
lol
Did you get the joke?
Yes, I did (after reading it again)
lol,

Not only it is possible but it most likely to become a grandmaster in your early 30s. All you need is to be silly enough to waste 6-7 years of your life, which for some people shouldn't be a problem at all...!
If you study chess for 30 hours a day for the next ten years then the GM title should be no trouble at all. For those who say you can't study 30 hours a day, Its difficult to study 30 hours a day but not totally impossible. You just need to be on a jet traveling west. By the time you get to be GM you will have logged a lot of frequent flyer miles.
it is totaly impossible to study 30 hours a day becuse a day consists of 24 hours

it is totaly impossible to study 30 hours a day becuse a day consists of 24 hours
Study chess in a super-sonic plane flying eastward... the same direction as the Earth rotates.

If you study chess for 30 hours a day for the next ten years then the GM title should be no trouble at all. For those who say you can't study 30 hours a day, Its difficult to study 30 hours a day but not totally impossible. You just need to be on a jet traveling west. By the time you get to be GM you will have logged a lot of frequent flyer miles.
um... There are only 24 hrs. in day, not 30
lol
It was a joke.
He was talking about going from point A to B. If you refernce point A while going to B into another time zone that is behind yours then by the time you reach your desitnation will have added time to your day. Leave area A at 8 am and go to area B (7 hrs behind) and if you get their in 1 hr you have added 6 hrs till it will be 8 am again the next day.
10,000 hours seems really strange and specific, but I'm not going to make judgments only because it seems like it should take different amounts of time to get good at different things.
Well, I am. Because it's stupid. And asinine. Yeah, really really really freakin stupid.