Just posting in the "wrong" sub can get you banned all across the platform (no matter what you actually said).
Of course, this violates several of the Reddit mod TOS/guidelines, but Reddit doesn't care.
Yesterday, one of the top stories in the default /r/news is the attempted assassination of a Mayoral candidate.
Today, it turns out that the guy was a far-left BLM supporter and all mentions and threads have been retroactively scrubbed from the sub.
It's just a large echo-chamber supported from the top down. Would it be exceptional to think that this information could "leak" into the hands of the echo-chamber mods?