Tightwads and nitwits and critics and heels
I think he uses it in the context of a in-joke/game (?) from his group of friends, Rowdy Fuckers Cop Killers. I've no idea what it's about or what it means because fuck watching any video about it, but apparently one group is the Rowdy Fuckers and the other is the Cop Killers.It's always the most soy men that have this laughable pretense of being dangerous. Do a search for Twitter profiles that mention "punch Nazis." Not a single strong chin or athletic body among them.
Not saying it's not dumb shit cringe, but I don't think it's used the same way as regular ACAB faggots.
Or maybe it's both, because he IS an ACAB faggot.