I guess we both have to back up a bit and stipulate to the fact that he is generationally in a condition beyond categories, that "X'er" and "War Baby" are terms that apply to Americans who are participants in their society.
A Red Diaper baby, Zero was educated as an enemy alien to emulate and esteem, from afar, his Mau-Mau daddy and the Communist International. He has always been an exotic, and he played on that in his presidential campaign. So saying he was a "Boomer" or an "X'er" makes about as much sense as trying to apply those terms to migrating Lapplanders or to Australian aborigines who've spent their whole lives going walkabout in the bush.