Account bans on Reddit. I signed up in 2009. I posted heavily for almost a decade. Then in 2018 the reddit admins banned the community r/gundeals. I messaged the admin account asking why politely. My account was banned. Later, r/gundeals was reinstated and the admins said they were wrong to have banned it. My account remains banned. I did not try to sign up again. Instead I started collecting RSS/Atom/etc feeds, I have over 1800 in my RSS reader now. I started posting on usenet again too. It's no reddit, but even if they were to un-ban me I wouldn't go back now.

Reddit was never the same after they started taking huge amounts of VC money, fired all the old staff that interacted with the community, and changed the interface and system so posting to your profile was normal in order to better fit the social structure of the users from the 2015->2020 facebook exodus they were depending upon to monetize. It's pretty much just facebook now.