Could be. I can attest that as of the late 1970s MIT and some of these professors did not care about free speech. My source on the state of the campus has since retired and is not looking back at all, but told me in the middle of the last decade the most rightward a student could be was libertarian, and I have to wonder if that's still allowed.
More likely these professors, having done their part to turn MIT into "an oasis of totalitarianism in a desert of freedom" are now worried the monster they helped create is going to cancel them. Which is how holiness spirals have worked throughout history.
https://www.theatlantic.com/ideas/archive/2021/10/why-latest...