All the quotes you provide, Whickerman, are individual points of view and, albeit from heads of government, carry little weight in the changing of regulations, as witnessed by the acquiesence of the VA to the use of the pentacle. Individuals come and go, even Senators and Presidents, but the business of Government is ponderous and plodding. In my view, that's not a bad thing, in most respects. It would be truly disconcerting if the everyday Regulations, under which we all live, changed at every election.
It's rather like the rule of law... "The wheels of law grind slowly, but exceeding fine..."
By the way, my example of Ku Klux Klan has already been tested and discarded. Followed by in-for-life prisoners petitioning for recognition of various and sundry "religious" recognition, some truly bizarre. A line has to be drawn somewhere, and unfortunately, that line often favors the majority, at least for the moment.
I think most would espouse the view that a person's choice of symbology on a gravestone matters not a whit as far a questions of eternality. Walking through any cemetery, military or otherwise, reveals unique choices of self-expression... one of my favorites is a headstone in appropriately named Tombstone, Arizona...
"Here lies Les,
Shot by a .44
No Les, no more"...
Alles Gute im Neuen Jahr!