Institutions have accountability to the people. Nobody except a fringe wants universities to be maga centers, most people just want them to reflect “common sense” and forward the will of the American people
That are not desired by the public until it is. A lot of people might find research in advance and quite esoteric math useless, as it does not produce any benefit to them. That is until those research yield something that can be used in a way, or in another field, where it does impact their lives. The issue is that you cannot easily tell what is useful or not. Some research have a clear goal, who, if achieved, will yield very tangible benefit, but they might never reach it. On the other hand, something that seems impenetrable to the average man might yield incredible benefit.
Without the freedom to explore, nothing would ever be found.
I would also dispute your assertion that “no one wants universities to be maga centers.” Leaders on the right have said that they do want that, or at least the right wing American mythos to be uncritically taught and not challenged.
I said “nobody except a fringe”, which is correct
One things that fascists do when voted into power is assume that any random strange ideology as part of the platform is now so popular that it must override existing law and procedure, and that is exactly what Trump is doing here. Which is why these researchers are leaving. Not because they are doing something the public dislikes. The public looooves scientific research.