I’m sorry you had that experience. Discord moderating is all over the place in most Discords, it can be hard to find a decent one. I received a warning recently for sharing a link that had a curse word in the URL with a very popular Linux Discord where I see double standards as well. I joined the Lutris Discord server awhile back but never found good conversation so I just ignore it at this point. Their logo is ironic considering your experience.
BTW, you are not a nutcase and do not deserve to be banned for calling them out.
No, I think they might’ve deleted other comments, too. There is a guy trying to get banned it seems by throwing around antisemitic speech. It’s just chaos.