Having people with integrity quit is a secondary goal. And with the compliant people remaining, they can do a slippery slope, with the people thinking "Well I've already done X, X+1 isn't that much worse". Slash they'll absorb the Nazi propaganda as "acceptable".

Gas chambers when?

If the people with integrity quit, they have less overall capacity. An alternative is to get your union to be political and strike over this shit. If you don't resist in some capacity, you are just helping them.

Some people still need to feed themselves and their families.

But if there was an option, they definitely should.

imagine being told to spend a week re-doing builds to rename "master" to "main"

These are not exactly equal. I'm not saying that I am particularly triggered by such titles (even when they apply to my family history, genealogy, etc) but there are some people who are and accomodating them is not a huge impact.

Changing the names back because you were upset that somone changed them in the first place, with the express knowledge that some people may be affected by this, is a dick move.

One of these moves is a virtue signal, yes, but it has no real impact once completed. This current move from 'main' to 'master' is designed to both virtue signal and to upset/piss people off/etc.

That was stupid, but not evil.