I think the idea that 'if it happened to Kate it wouidn't have been tolerated' is just plain wrong.
There's plenty of evidence to the contrary linked to this thread, and I guess all/most people here can remember it.
And no, as I said in earlier parts of this thread, it's not right. Even though it happened to all the women to married in - and to a certain extent those who were born in too (notably Princess Anne and Prince Edward)
Harry is however different as he was the spouse who said 'this isn't right, so I am going to remove my family from it'. And good on him.
The snag is that so many of the actions since making that decision have been entirely counterproductive to that aim.
They need to fix the leaky friends for a start. Harry's circle was almost entirely leak-proof (in quite interesting circumstances) before his marriage, so it can be done.
The book has walking disaster written all over it. I hope that all the reports about it are just plain wring. Because if you are putting your private life into the public domain, then can be globally considered fair game. Restricting it just to the bits you want commenting on can be a difficult balance to pull off. But of course they do have the immense advantage that the Royal Family doesn't comment.