It's paradox of tolerance for internet moderation.
If a forum is going to support a culture where contributions are freely expressed, it has to have moderators who know what a "pipe down" looks like and aggressively suppress them.
This obviously provokes "mods censored me! mods censored me!" which is both a surface analysis, criticism and a fact.
I think forums where posting rules are strict and membership is an uncommon privilege have squared that circle already in the past.