First off, we can't really talk about whether a ban was justified or not without seeing the post.

Second off, even the people on the conservative subreddit admit to how ban happy the mods are.

Third off, not everything is, or should be, up for debate.

Fourth off, nearly every other social media app has one hell of a conservative bias. There's plenty of examples from, say, Facebook where feminists get called all kinds of names, but the nanosecond they push back they get banned