I think these IM/GMs are forgetting what it was like to play chess when they first started out. Nowadays, they see the board as, well, IM/GMs, and it's a different experience from someone who's just starting out.
I'm terrible, terrible at chess, but at least I don't hang my queen or do other truly stupid shit in longer time controls. You can't even really start to play chess for real until you stop just giving up pieces and I think as long as you're throwing games that hard, I dunno if rapid/blitz is the best place for you.
Or at least, that's what I think you might have heard when you say you've heard "blitz is bad for you". Once you stop doing the truly stupid shit, then you can start learning chess for real, and maybe then it's better to do rapid/blitz.
I know in Starcraft2 there was a component of grinding that pros would recommend, but you can't really grind if you don't know how to do screen hotkeys, for example.
I especially recommend blitz for beginners. It will mercilessly expose the gaping hole weaknesses in your game (i.e. hanging pieces). The way to improve at chess quickly is to find your blind spots quickly and train them.
Most people struggle to get good at chess because they are too afraid to lose, and too afraid to actually do the "practice" part of playing which is to analyze your losses to identify which areas you need to train.
Grinding is not how you get better. Grinding can be fun, and can be a great way to blow off steam. Both of those are awesome reasons to play chess. But if you are serious about improving quickly, do what the pros do. Don't grind aimlessly. Play a lot, don't be afraid to lose, and do legit post-mortems to give you feedback on where you need to pay more attention.
I'm terrible, terrible at chess, but at least I don't hang my queen or do other truly stupid shit in longer time controls. You can't even really start to play chess for real until you stop just giving up pieces and I think as long as you're throwing games that hard, I dunno if rapid/blitz is the best place for you.
Or at least, that's what I think you might have heard when you say you've heard "blitz is bad for you". Once you stop doing the truly stupid shit, then you can start learning chess for real, and maybe then it's better to do rapid/blitz.
I know in Starcraft2 there was a component of grinding that pros would recommend, but you can't really grind if you don't know how to do screen hotkeys, for example.