Along with vast swaths of fundamental physics. Nobody doing serious philosophy of science is a strict Popperian these days--the Quine-Duhem thesis put the final nail in that coffin 25 years ago.

I think this is mostly a shitpost, because Liam Bright is actually pretty rad. He's done a bunch of work about how racism and capitalism are inextricably intertwined, and is pretty radical in his positions about philosophy in its current form being basically useless to society, since it doesn't usually engage with actual social problems.