He did worse than endorse him. He called everyone calling out his Platner promotion and excuses wreckers, ultras and feds, and explicitly said he "doesn't care" what the guy did in Iraq and Afghanistan.

He and the other Platner libs made this their hill to die on. Anyone who cares about imperial war crimes and their victims is their enemy, to be relentlessly smeared and mocked. And thus they have chosen a side, the empire's side.