The London is a perfectly good way to play chess, and I have done quite well with it against sub-2300 opposition OTB (although then again someone of my rating can't be expected to have a lot of success against 2300+ regardless of the opening anyway...) but it has gotten a little much lately the number of people who have recommended it to amateurs. It makes it a less attractive option to more serious players such as myself.
That doesn't mean that for beginners you didn't make a good video just now; actually you seem like a very good teacher for them.
It's just a little tiresome to see it recommended by everyone everywhere for amateur players. But I can't argue with its merits, and those who are most vociferous in their hatred for the London in general are typically those who have the least understanding of the positions. It's just some opening system after all.
My recommendations for all you, dear chess beginners. If you want to say thanks, you can subscribe to my channel by clicking this link: https://www.youtube.com/kestony?sub_confirmation=1
Link to video: https://www.youtube.com/watch?v=hdMBHfkeSzY&feature=youtu.be