I'd say that what you are saying probably is true of large cities like London where you have a huge population of people that aren't really in tune with it beyond how you describe.
Out in the country side, you'll find it's quite different. The press treats it like a soap opera and all, but is that the people?
When you are in a highly cosmopolitan city such as London, nobody really gives a shit about much other than themselves and their immediate interests friends and family anyway. It's such a hodge podge of people now anyway as well, you can't expect almost half the people there to have any cares or concerns or knowledge of the history and purpose of the monarchy. That's right, almost half the population of London is not of British origin. So it stands to reason there will be degraded attitudes about the monarchy there.
Also, I'm only first gen Canadian and in fact I am by that merit, still pretty much British when it comes down to the legal aspects of it.
As in, because I am first gen and my parents are both British, I am a British subject as well and am entitled to passport and full privileges of a British citizen.
So, it's not some sentimental garbage with me, it is about the history of it, the unity, the representation of unity and the model for a superior society which I feel British society and it's offspring are.
Coconuts. Bananas. Mangos. Rice. Beans. Water. It's good.