But everyone knows the queen.
Everyone knows Brad Pitt too, but we don't give him special fact time with the PM.
I don't get your point about the GG of Canada.
I'm not seeing anything here that's all that persuasive, let alone convincing.
if you put aside RF propaganda that they account for 88% of our GDP, then poor public finances, which are going to get much worse as the public ages, may not convince you (and we won't convince everyone), but may convince others. While we spend endless energy trying to wring more efficiency out of the NHS and education system, we are increasing the sovereign grant. While you may not be swayed by the moral argument (our government literally recognizes that some people are, by virtue of birth, inherently better than others), others are.
I can't wait for Charles to come. I hope to then hear calls from many monarchists, who probably won't notice the irony in complaining about the new monarch we have been given, to get rid of it.