Class Reductionism is certainly real. Their name escapes me, but there is (or maybe was, they could be gone now) a communist party in America who show up to anti-racism protests and chant "BLACK POWER WHITE POWER ARE THE SAME! RACISM IS THE BOSS'S GAME!" So they're a prime example of class reductionists.
It's just massively overused as an attack, especially against people like Adolph Reed.
Strasserist is good. NazBol is probably more accurate but it's a fucking meme at this point.
you just reminded me of a time where I got into a small argument with a stupidpol spinoff sub moderator (i called him a radlib), and I pointed out that I had their sub's founder tagged as a /r/c**ntown user (through one of the old tag lists generated a month before the sub got banned).
they were actually legitimately surprised by this fact