I still don’t think I understand what you’re saying.Because he can choose to get discharged? He will land on his feet, and when MORE guys do this, there will be such a backlash that they will have to confront it and change their discharge. None of this will change if they can pick off one or two of us at a time
ETA: It sounds like mutiny, which is an easy thing for you to advocate on a gun forum. Harder for the men involved.
But it’s moot anyway. This isn’t your choice, it’s the OP’s son’s. And he already made it.