Of all the forums, websites, social media, etc I've used, never have I experienced worse moderation than reddit. I've never been banned, but I've had comments removed for some of the most arbitrary reasons, and the average moderator seems to almost despise their own userbase, with the exception of their fellow mods.

To cite a particularly egregious example, I once saw a person banned for "giving medical advice" on /r/adhd, while not one, but multiple other moderators had also given medical advice in the exact same thread. A thread that was explicitly asking for medical advice.