Disclaimer: I'm not an expert on psychology in any form.
You seem to have a strong opinion based at least in part on the results of the Milgram experiment.
If I understand you correctly, you argue that the Milgram experiment is strong-ish evidence for humans being easily swayed by greater-good arguments to commit what an outside-view person would describe as morally wrong.
From what I understand, the Milgram experiment is however an experiment in
obedience to authority, attempting to show how people can
ignore their moral compunctions in favor of not disobeying. It seems to play into human fears of disappointing/angering a perceived superior, instead of appealing to a sense of greater good.
If you have some psychology research to link that specifically tackles the greater-good argument and finding/linking it isn't to great an effort, I might be interested in it (ok, so I tried to make this sentence not sound antagonising and I'm not sure wether I succeeded. So here's a note that this sentence is intended to sound neutral-ish with a pinch of genuine interest).
I also found this
analysis of the Milgram experiment, which at a glance seems to present a more nuanced picture than what I recall having learned about the experiment in school: Obedience seemed to have varied quite a lot depending on factors like peer pressure and distance(?).