What do Reaper and Doomfist players have in common?

I’ve been playing Doomfist a bit and I can see why almost all of them are toxic, though I obviously don’t agree with it.
He’s one of the most frustrating, if not the most frustrating to play character in this game.

He’s countered very easily and Sombra, Orisa, Hog and Ana ALWAYS come out once his existence is known.
If he misses a punch, he’s screwed, he’s just dead. It’s over for him if he misses.
Block is just a big “please stun me” sign. Ana will always save stun dart for his block, Orisa will always knock him out of it, Hog will always hook him out of it, Sigma will always rock him out of it, etc.
His ult almost never does anything except heal him. You know exactly where he lands and can easily cancel his value by stunning him when he’s charging punch, which not only cancels it but also removes all the accumulated power.

He’s extremely frustrating to play, which leads to a big burst of “hahaha YES!!! #### YOU!!!” when you actually manage to kill someone.