They ban you for all kinds of nonsense. I had a couple turned over on appeal. My latest ban was for 7 days for threatening violence because I said I hoped those guys who got caught fomenting unrest in Greenland were charged with something serious made an example. The comment was on topic, within the confines of the justice system and made no threat against anyone. Reddit has some really weird moderation. I just deleted the account. Fediverse is better for actual engagement anyway.
The internet has been broken for at least a couple decades. The Fediverse is about the closest thing to the old internet.