That's the reason I got banned. I posted in one anti-covid sub a study that refuted one of their pseudo science ones and got banned from 8 or 10 popular subs, most which I didn't even join, and warned if I ever dared post there I would get banned from reddit. And yet there is no reddit feature where you can see where you are "banned" from. It's ridiculous. I didn't even care but a lot of stuff hits r/all and you can easily go into those groups and comment on something. Banning should mean you can't enter or post in a sub, but it doesn't. That's how glaring "reddit features" are and how awful some mods are as human beings.