"1) the "combative" quote of mine is incomplete
2) the message itself looks like a regular user issued me a ban (which is probably true)

Very "professional" moderation on steam forums. And so impartial!

The full "combative" quote for context btw =
"Everything is a hate campaign if the person perceiving it is only interested in spreading bigotry".
Saying this to a person is a bannable offense on steam forums apparently.

Btw, the reply (which contains direct negative characteristics applied to the person) went completely unpunished:
"And nothing is a hate campaign if you're obsessed with a culture war"

just wow."