Yeah I mean in a way it helped me excise a part of me that was terrible, but I think it’s way too easy to never have that personal revelation and just be angry and shitty forever.
I think you can better yourself with it the same way you can with any competitive game, but I would say the specifics of MOBAs or DOTAs don’t do you any favors. You’d be much better off in a game with either a consistent team (no randos) or a solo game. I think blame dispersal is the #1 reason people are so toxic in these games.
The burden of knowledge you need to play is the #2 reason; it’s super easy to hit local maximums or blind spots, where you think you’re playing well but you aren’t. There’s just way too much information and there’s no way to collate or filter it without dedicating insane amounts of time to it.