It's played up in jest. He's acting like he's some great authority that everyone worships but in reality he isn't (and he knows it, that's the joke). Jim Sterling is big on showmanship, so much so that he eventually got into being a wrestler on the side despite having terrible back problems.

It's like Jack Black's band Tenacious D claiming to be the greatest band that ever lived, knowing full well that they aren't, but pretending they are is part of their shtick.

Naw, Jim is a good guy. Uses inclusive language, I've never heard him say anything racist.

The circles he runs in are all EXTREMELY progressive.

In fact he actively advocates for gay and trans rights.

Jim Sterling is as far from a Nazi as you can get, though.

It`s parody.