> That's why everyone should subscribe to at least two subreddits they don't agree with.

Certain subs will automatically ban you if you ever participate in another sub mods of the former sub do not like. r_offmychest will automatically ban you at the first comment for instance.

This very thing does prevent good faith people from participating in subs that are antagonistic.

It's against reddit rules but admins do no care. Admins do not care about brigading either (a sub encouraging the harassment of another sub or person), unless some specific subs/users are victim. r_ch* p* tr* ph* * s* regularly engaged in the bullying of users and subs until they attacked the wrong person and got quarantined.

I don't care what the rules are, only that they are enforced very differently depending on who violates them and who is the victim.