agreeing, though to widen the perspective, it's been happening since long before the current administration, or that before it, were in power.

As a concrete example, my amazing professor left U Illinois for Austria, for an example, several years before the Trump/Biden/Trump again era.

it seems that the unending political battle drama gets tiresome for scientists. I believe some people realize that immersed in that context isn't how they want to spend their lives.