[BinaryIdiot]

Maybe it's a cultural thing but I've never seen the phrases "catching heat / catching flak" used when it's not in return of an action (I don't see any official definitions online either but as far as I can tell it's in return of some sort of action). What you're describing just sounds like typical insulting / disparagement.

I don't really know how much evidence is in any of those claims (I thought there was supposedly evidence, not zero, but I really don't care enough to bother looking anyway) as I never really wanted to talk or even fight about anything relating to Pao but I could see that changing the context for catching heat / flak if there is or isn't evidence.