Controversy seems to be a euphemism for "wrong" political views though. I'd be more sympathetic if they had a blanket "only creative professionals" policy.
It's not a political issue, that type of language is not acceptable anywhere in public society; even 30 years ago you couldn't speak like that and expect to retain any position of prominence. Try that here and you'd be banned very quickly. Patreon making the decision to explicitly rebuke that kind of language seems totally within the realm of defensive corporate PR.
