Hopefully no one is asking developers to be virtuous (even tho, to be fair, if we are going to be asking that we should also expect the code to be wholly bugs-free!), but how many times they actually “keep their beliefs to themselves and focus on technical issues in the project”? On whichever side. It’s just not a thing that can reasonably be avoided all the time between humans.

But the reality of these times is that behaviour outside the field of programming is representative and/or predictive of behaviour in the field of programming, when it comes to literally working with other people. And this is not only about the act of commiting changes or filing PRs, it’s about the why of programming and the ways of delivery as well. Someone who strongly associates with barbaric beliefs is less likely to want to spend their spare time working in peace for all, and more likely to be wanting to work on software that at least in some way carries or represents those beliefs, for example in capturing and using user data, or in aiding systems used by the military to kill children of “non-citizens”. So being “absolutely” uncaring does not really make sense.