I read it as saying that, despite having ideals on two opposite ends of the spectrum, they've found "common ground" of sorts, in a community full of people who can't handle living in irl "mixed society."

In other words, they're the only people willing to put up with similar behavior to their own I guess? This is all speculation, I haven't seen what those instances look like these days and don't really have any interest.

That wasn't clear to me.

You can always check context before typing, just saying.