A while back I linked to an article from The Intercept which spoke about her activism against anti-Zionists, including anti-Zionist Jews. She's not exactly a good faith actor when it comes to that stuff.
Honestly, the fact that her and Chomsky both signed onto the same open letter on "free speech" is kinda hilarious in that regard, because Chomsky is exactly the sort of academic that Weiss has gone out of her way to ruin.