Tons of women are describing his shitty behavior over the years and how they were told to avoid him. "Christ, why would I want to work there near this guy" leading to women leaving the community produces the same outcome as organized discrimination.
If RMS had just thought this stuff in his head he'd be fine. His actions harm the community. This is the exact opposite of a "thought crime".
Why not go after actual occurrences of discrimination, rather than assuming anytime some speaks out in a non-PC manner, that it means they are also going to discriminate against others? This is arresting for murder before it happens. It's the canonical example of "thought crime".