I'm aware of the paradox, and it's a wonderful idea!

It still looks to me that in this case, it's the people calling RMS intolerant that are the intolerant ones. On the contrary, I think RMS actually tolerates a whole lot. He clearly has different views than others on a variety of topics, yet he doesn't let it affect his technical decisions. He's been attacked viciously in the media, but he's tolerated it and is coming back to the FSF. An intolerant person would disappear. Consider all the people on the board of the FSF with opposite political views than his, that he tolerates on a day-to-day basis. An "intolerant homophobe/transphobe" would not tolerate having homosexuals/transexuals on the board, for instance.

Ah, yes, I am mostly on board with the specifics of what you said in this message, even if I disagree with some of the generalizations. The original one lacked too much context for me to understand it.

Popper would have been disgusted by the treatment of RMS and cancel culture in general.

He'd also have been disgusted by being used in a propagandistic manner.