IMBW, but I remember Prince Charles promising, once he married Camilla, would never be “Queen” but “Queen Consort” or some other term like that. It’s the same thing.
He and his PR team pulled off a brilliant plan, as she is fully Queen, as always was and is the law no matter what “softening” terminology he promised.
H & M’s return will be done in phases, like cooking a frog in warm water. But it won’t matter, as you said. Although I suspect the overt takeover may well come sooner than 2050. Brits need to seriously consider escaping while they can. JMHO.
Any woman who becomes a queen by marriage is a ‘queen consort’. Diana would have been, and the Queen Mother was. Katherine will also be a ‘queen consort’.
There's still time for them to move to Australia.