Yes, this is basic respect my authority stuff. It's Trumps military. You don't go behind your commander's back. I haven't decided if his pardons are good. Part of me thinks they are, war is hell.
Gallagher case, prosecutorial misconduct, over charging, and oops, a witness blew up the case by saying he killed the fighter. Did Gallagher stab the guy? Probably. Did the team practice extremely invasive combat medicine even knowing the insurgent was going to die and their practice wouldn't help that? Most likely. They don't learn that stuff on CPR dummies. But, you bring charges, prove the case. All the stuff trying to take his trident is just sore loser stuff.
The other two cases one maybe a war crime, the other that was already serving time, no.