First hand accounts are evidence. That you dislike or disbelieve them doesn't make them libelous, it just means you don't want to believe firsthand accounts of bad actions by a person you admire.
Pretty sure she was saying that hand-wavey statements like "he's done bad things in the past" are libelous, not people talking about their experiences. Regardless: there's another option here, where you don't dislike or disbelieve anyone, including rms. Just keep that in mind.
It's very difficult for me to square "these are libelous hit pieces" with not disbelieving people when said libelous hit pieces reference firsthand accounts.
Said handwavey statements are also not libelous, at all. Libel is a high bar.
> 2. Richard Stallman has been contributing to a negative environment for women at MIT for over thirty years.
From the original article, contains a number of quotes from witnesses and people who felt uncomfortable or harassed due to Stallman's behavior over a span of ~20 years while he was at MIT.
Then there's this[1], this one where he argued about the re-inclusion of an abortion joke in code because his code is inherently political[2][3], Stallman apparently violating the policies at a conference he attended and going unpunished (which is a common occurrence)[4]. People have been complaining about his casual sexism publicly for decades[5].
And I'll remind you that the "charge" here, insofar that there is one, is that "Stallman behaves in a way unbecoming of a leader of the free software movement and other organizations". There's ample evidence here that he repeatedly and continually refuses to communicate with others in common ways, instead he invents his own language (no really, he has a personal dictionary on his website) and when his counterproductive communication methods cause confusion or pain on the part of others, he is generally unapologetic and unwilling to correct them.
Please provide some first hand accounts. No one has done so yet. I've seen plenty of second hand rumors etc but no one has put their name to any of them as the originator.