I’m not sure if you expanded over broader society, but people of public institutions not making (public/visible) political remarks has good reasons: As representatives of the public institutions which are supposed to serve all citizens it’s important they are seen and trusted to be neutral and serving the state, the public, everyone.

If public servants talk one way or the other, others may lose trust.

Obviously, right now people are losing trust, and for good reasons, for other reasons and prevalence.