What do you mean by this? If a government conscripts "average citizens" into its military then they become valid military targets, sure.
I'm not why you think this implies that developers working for Palantir or Clearview would become military targets. Palantir builds software for the military. But the people actually using that software are military personnel, not Palantir employees.
Yeah we typically call those people terrorists or war criminals.
I have friends who are otherwise extremely progressive people, who I think are genuinely good people, who worked for Palantir for many years. The cognitive dissonance they must've dealt with...
Hannah Arendt coined the term “the banality of evil”. Many people think they are just following orders without reflecting on their actions.