I'm very confused as to what you mean. Are you saying it's not possible for people who get paid above a certain threshold to be bullied and harassed at work? I strongly disagree with that.
If people are telling you that they're leaving their job and salary because of those problems, then it probably is a big deal. Also, telling people who have voiced concerns to "just shut up" is not the way to foster healthy communication at work.
It’s a good thing when people leave for a place that suits them better. I would leave a team that made issues I don’t care about an important part of the job, but that doesn’t mean I think they’re doing anything wrong.
Telling employees there are other places they can go that are less hostile is still not a justification for having a hostile workplace. If everyone thought that way, nobody would ever tackle these problems. It's a mistake to try and equate this with some other technical choice, this is not the same as quitting a team because the boss wants to use C++ and you want to use Java.
