My guess is that they're referring to the open letter from people working on many GNU projects calling for Stallman to resign.
I think this is the letter in question:
https://guix.gnu.org/blog/2019/joint-statement-on-the-gnu-pr...
I still don't know what Stallman did.
Got caught up in an organized witch-hunt to remove him from power. Too much freedom of speech for the current FSF.
What do you mean?