The book tells us that the Windsors are a dysfunctional family. From the historian’s perspective, this is not exactly breaking news. Remember Queen Caroline? Henry VIII? Henry II?
The difference, of course, is that political life in England was unimaginable without the monarchy in those days. Today, not so much, as Charles seems to understand, even if his mother probably didn’t.
But the UK needs some sort of a head of state separate from the PM of the day, and monarchist mumbo-jumbo probably brings in more money than it costs. That means the public dysfunction is not really a big deal in the larger picture.
In their completely different ways, both Charles and Harry are right; the problem with the monarchy is that it encompasses too many people. Focus the attention on the immediate family of the monarch and cut the other royal parasites loose to get real jobs and live unencumbered lives. That’s what Harry did.