It's as you described; he called Assange supporters people who hang out with weird fascists. I may have put some words in his mouth, but I still don't like the take.

https://xcancel.com/SocialistMMA/status/1960769619620454784

The person he was responding to just asked him to speak about Assange. If I ask someone out of the blue for their opinion about Marx and they tell me to shut up and go hang out with weirdos, I would interpret them as anti-Marxist.

Assange deserves full support—more support than "he shouldn't be in prison" IMO.