>I think you are confusing right learning opinions with outright racism, anti-Semitism and calling for violence against various minority groups.

I'm not. For example, I was banned like a week ago from a sub for arguing that it's not obviously selfish/evil for someone to travel during COVID if one is allowed to do so. It was on a travel-related subreddit where there were no rules to this effect, but a mod felt that this sort of attitude was tantamount to advocating manslaughter.

Most subs will not have "no conservatives allowed" rules but the enforcement patterns often will not follow the rules.