I agree, and also have felt for a while that KC3 is keener on the idea of the inherited glory of Monarchy than of its duties, and so while Harold has indeed been a bit naughty, he is still ROYAL, which none of us whingers are. So really we should jolly well STFU. But I'm a Kiwi and may well be reading it wrong.
I don't think Charles minds performing his duties.
I think Andrew and Harry only want to carry out duties that make them feel important, require little effort and if there's something in it for them.
I think in particular Charles and Andrew expect everything done for them. They are indulged and incredibly spoiled and, I suspect very demanding.
Harry seems to be more obsessed with being surrounded by Security staff rather than being waited on.
But with Charles, what's the point of being a King if you can't be a bit spoiled? As long as you don't take it all for granted (the Queen didnt) most of us don't mind.
But take the piss and we get angry.