Think of the Queen as the boss rather than a grandparent. Minor royals don't receive money from the royal list (as Meghan and Harry do/did) so are able to undertake commercial ventures. Not everyone has access to the boss at a moment's notice particularly over an issue that needs resolving elsewhere first.
It is looking more and more like Harry tried to present the RF with a fait accompli - baby and dogs apparently left in Canada, Meghan has already gone back and who knows where Harry is now. Flights make a mockery of their environmental prize, wonder what the criteria for that is?
I have no problem at all with them not being senior Royals, but that means no Frogmore Cottage, no protection officers (incredibly selfish to expect a team from the UK to spend months away from their own families abroad unlike a short royal visit and there are rumours that Canada doesn't want the expense either) and no handouts from the public purse. I don't think they will take the Dukedom off them but really, I think they should.
It's the manipulation and cherry-picking that has gone down badly. We've all had a holiday where we thought we could live there, not many of us have gone home and tried to do it, though! I don't know why they thought it would go down well, they do seem to have a real victim or bunker mentality.
Prince Charles actually holds all the cards here, as he is the one that funds them. That's most likely to be the reason the Queen told Harry to speak to him first. Without Charles providing the money, Harry is pretty sunk really!