The project management book we used in the university noted that if a person refused to work on weapons/military systems and similar, there's no other choice than to respect that, and even asking for its reasons would be borderline unacceptable (depending on your closeness with said person).

Now the only reason models trained on any and every public data can't be attached to autonomous weapons is that we didn't fed enough data to these systems to carry this tasks reliably yet.

You said the overton window is moved, yet there's no window to discuss about in today's world. As a human being you either get exploited or get exploded. In either case human is the product. We just serve machines at this point.