Citation needed. NYU hasn’t fired anyone for being pro Israel. In fact if anything they’re over sensitive to any criticism of Israel because of its large Jewish student body and the fact that they have a campus in Tel Aviv.
The only example I could see of anyone pro-Israel being punished was a doctor demoted for posting anti-Arab racist images on his social media. But anyone who posts pro-Israel comments in general or supports the war has no problems. Again, citation needed.