There is an argument like: the moral quality of institutions/companies is determined by the people inside it, so if all of the conscientious people vacate the i

There is an argument like: the moral quality of institutions/companies is determined by the people inside it, so if all of the conscientious people vacate the institution/company then they are effectively ceding their places to the unconscientious people. If said institution/company is powerful, it's not clear that this is going to make things better. A counter-argument for this is that working at such places makes one complicit, and most generic software engineers, regardless of their technical acumen, have close to 0 potential to affect the moral compass of the institution/company at all. Such people may be viewed as keeping an immoral institution/company afloat. But if there is a charismatic, driven, conscientious person who does have the potential to accumulate enough power at Facebook to shift its moral compass . . . it might be nice if they actually worked there.