AFAIK the subject was discussing Marvin Minsky's acts related to the Epstein affair, on some MIT mailing list (semi-public). RMS was having a discussion about someone he personally knows. If I personally know someone accused of something, and I think it doesn't fit well with the person as I know them, I may doubt, wonder, ponder, etc. In fact, it seems an obvious, natural thing to do in such a case.
But for some reason expressing doubts about Minsky's culpability was this particular day akin to apology of rape or child exploitation.
OTOH Epstein has been obviously assassinated in weird circumstances that scream "many very important people wanted this guy dead" but apparently this is no big deal. Go figure.
Oh I didn't mention the generally inappropriate behaviour of RMS. He's dirty and so and so. Then there's his behaviour with women, so let's see what Gruber said: so he basically went to women and say silly shit such as "go out with me or I'll kill myself". That's ridiculous, that's annoying and that makes the person on the receiving end uneasy and shameful and offended. But that doesn't qualify as an "aggression" or "harassment", it's stupid and lame, awkward and tasteless, however I pretend that hurting someone's feeling shouldn't be prosecuted. Ever. As long as no insults were proffered, generally that's what the law states in civilized countries, too.
Asking someone out in an awkward way once doesn't qualify as harassment. Watching intently as someone doesn't, either. Making someone uneasy still isn't harassment. And this seems to be all there is against RMS, which is, admit it, really not much.