You’re correctly assessing the situation but the conclusion you reach is wrong. Here’s how:

As another person said, just tack on no ethical consumption under capitalism and you’re golden. Soon you’ll be crunching through critiques of Goldman and speaking in ways that make normal ppl make the brotha eww face. But the big difference between just doing my job and just following orders is degrees of separation and situation.

Even though people in positions you describe at companies you’re talking about ought to be able to understand the connection between their work and the immiseration of all humanity, it’s very easy to imagine someone who through choice or ignorance doesn’t see that connection. Our higher education programs have been removing humanities and arts in favor of stem associated education and ideas like effective altruism are renewing the randian tradition. Further, the work of many people in engineering is partial and atomized. Who wouldn’t want to put in the time designing a hermetically sealed self oiling piston that never needs maintenance over a million cycles? Who wouldn’t refuse that job when shown the patent drawing in which it’s a crucial component of a captive bolt gun against a human head?

The situation itself can’t be undersold. Soldiers (and hired workers!) on trial for war crimes couldn’t claim they were just following orders because they saw directly what their labor wrought. There was no degree of separation. Our expectations for that closeness to atrocity are different than when there’s a few veils between us and the subject. We expect people to get a different job, to defect, to sabotage, to kill their COs.