Churchill was a racist that (arguably) saved his nation from invasion.
Stallman is a Marxist ("from each according to his abilities, to each according to his needs") when it comes to how the power of computing is used and distributed and arguably the GPL and Linus's choice to use it for Linux have had world changing effects.
But Stallman is a man that also has no clue about how to deal with people in general or in tolerating other views.
His defence of Minsky's behavior is unacceptable as the head of the FSF and damaging to CSAIL/MIT (as is the relationship of MIT to Epstein in general).
It is unfortunate for him that his defence of Minsky has had this effect on his career. However, the impact of the result of that defence on the institutions he represented is much more important to resolve.
Geniuses in one field are not knowledgable in others.