I’m not gonna take responsibility and try to be your wake up call or anything, but this:

The ease at which people have been able to point to something and say “_____ is why you’re banned” kind of scares me into thinking something deeper is going on.

This thought would normally cause someone to be introspective. “What is it about oneself which is causing me to get banned?”. “Something deeper is probably going on” internally.

For the record, I’ve only ever been banned once in my life for something I’ve done or said, and that was 15 years ago. There are ways to say and do things which won’t get you banned. I’ve been on many forums and participated in many subreddits. I’ve even moderated before. The fact that you have a written down online code of honor/ruleset (regardless of its contents) is a red flag.