My local subreddit has become a proxy for /r/fuckcars and is also pushing a strong pro-new-airport narrative, among other things. There is a subreddit rule against “creating drama in the community” and any comment against the hive mind on these topics is interpreted by the mods as creating drama and removed, sometimes including a temporary ban. They more or less enforce the echo chamber. Disagreement is futile.
Meanwhile, reporting comments that clearly violate the subreddit rules for things like ad-hominem attacks and spam in turn get the reporter reported to Reddit admins for abusing the report button.
From my perspective a few of the elder mods stepped down and were replaced by activist mods that are moderating with strong, shameless ego to reinforce their preferred viewpoints and narrative.