No one said that it is all like that, but enough of /b/ is so gross as to taint the reputation of the entire site. Allowing some of the stuff that is on there is enough guilt by association, even if some of the other boards have better discourse.

There are already comments claiming this, thanks.

Except when it was on 4chan and it was actual Nazis just being Nazis. So no, not blatantly sarcasm.

I only know it as “I approve of this”, not “lol, I don’t approve of this, but I say I am to be hilarious”. This is the danger of adopting this Nazi Internetspeak to be funny.

There’s no reason to be rude. See Rule 1.

“Based”?

Admirable; praiseworthy, especially if the thing that is considered “praiseworthy” is unpopular or controversial.