The one thing to keep in mind is that an accomplishment is doing something that was a challenge for you at that time. For example, when I first broke, say, 1000 over the board in 5th grade, I was really proud of myself and felt very accomplished, especially because I had put in a fair amount of practice to get there. Of course, now with years of experience and being 1000 points higher, I look back and see all the mistakes I made that are obvious to me now, but despite my level of play being so much weaker than it is now I still consider that an accomplishment.
is getting to 1200 even considered an accomplishment?
I am 1200, but I still go to clubs and tournaments. However, I don't go to them much. probably once every 2 months
I think 1200 is an accomplishment. I saw the Queen's Gambit on Netflix, and I thought, I'm pretty good at chess, I'll make a chess.com account and get better. Given a choice between Novice, Beginner, Intermediate or Advanced, I thought, well, I'm not really a novice, I'm a beginner... I've played a few dozen games, and I think I'm pretty talented. Needless to say, I'm not talented... I was a novice. I plummeted to 400 quite quickly. Five years and 10,000 games later (yes, ten thousand), I'm starting to go above 1200 here, which is better than 90% of the people who have registered here.
Say what you will about it taking so many games to go above 1200. For me, it's an accomplishment. Unless you're extremely talented at chess, 1200 should be an accomplishment for you too.
Getting to 1200 is not an accomplishment by any means and should not be considered an accomplishment. People keep referring to the percentile stats but they mean nothing. If the vast majority of the population is absolutely terrible at something and you are only slightly better than them is that an accomplishment? No it isn`t. For example lets say you go a mental institution and are given an aptitude test competing against all the patients. The chance is you will get a better score than everyone else and will be in 99th percentile. Would one then say that is an accomplishment? Hell no. At 1200 you are still blundering like there is no tomorrow and have a very poor general understanding of the game. Is it an accomplishment that somebody else is blundering even more or has an even poorer understanding of the game? Absolutely not.

Getting to 1200 is not an accomplishment by any means and should not be considered an accomplishment. People keep referring to the percentile stats but they mean nothing. If the vast majority of the population is absolutely terrible at something and you are only slightly better than them is that an accomplishment? No it isn`t. For example lets say you go a mental institution and are given an aptitude test competing against all the patients. The chance you will get a better score than everyone else and will be in 99th percentile. Would one then say that is an accomplishment? Hell no. At 1200 you are still blundering like there is no tomorrow and have a very poor general understanding of the game. Is it an accomplishment that somebody else is blundering even more or has an even poorer understanding of the game? Absolutely not.
bruh
In the Elo rating system for OTB chess, 1500 is the average rating for people who play in tournaments. This means that they play regularly, study chess, and compete in tournaments.
the average player who knows how to play but doesn’t go to clubs or tournaments is probably from one to two rating classes lower, say from 900 to 1300.
you said that you have read one instructional book. That is far less than what most club players have done. so your blitz rating of 1200 on this site may be the equivalent of 809-900 for OTB chess.