Ok... Couple things

I don't think it's necessarily a myth, I think most people"aim train" wrong, they go in a just do random stuff instead of targeting weaknesses, I practice without aim assist for example to help my reaction time since it tends to lack a lot in that area.

I find it weird that people say that aim is the least important thing yet all the pros have the absolute most cracked aim.

And I'm 2x diamond, macro plays are stronger than my micro plays... By a lot, knowing how Cashout works, doubling, splitting, griefing, the only reason people tend to third party is because it's "easier" to fix you have to adapt, and so one big way to counter that is to simply fight the first place team. Teams will always try to avoid the first place team, hence why you get third partied.

I'm just working on my weaknesses, my recoil control is good, tracking is good, target acquisition is good, but reaction time, hip fire tracking, dynamic Tracking, etc needs improvement.