The number of signatories of the "open letter" is not five or six figures as mentioned in the episode. It is 3004. By contrast, a letter supporting Richard Stallman (https://rms-support-letter.github.io/) gained 6800 signatures. If the FSFE thinks the matter of right or wrong simply depends on how many people are made uncomfortable, it should withdraw its statement with unsubstantiated claims, as there are more people made uncomfortable by the lynch mob than by Richard Stallman.

See also https://stallmansupport.org/ for a comprehensive account and context of the drama.