Compare and contrast this:
> Say what you want about the Stalleman type he was very inspiring and had real leadership. So a lot of hackers followed him in his crazy vision and that gave us a lot.
With this:
> It is very feminine and obviously doesn't work that well.
It's a super sexist comment. A comment born in the 60s, or I guess in our geek land, still in 2025.
Is it?
To answer this, just reverse the genders in the statement and see if it's still sexist.
"It's very masculine and obviously doesn't work that well"
If you have problems with some type of behaviour it’s much better to say exactly what they are rather than appealing to some platonic notion of sex characteristics, which is both offensive and poorly communicates your position.
Criticizing a woman for failure because of femininity falls nonetheless more into sexism than actual criticism of actions taken.