I think Harry is very like his mother, led by his emotions, prepared to blow everything up without the maturity to understand consequences, hitting out at everyone who doesn't back his feelings and opinions (in fact perceiving anyone not 100% in agreement with him as being 'against' him.), not being willing to listen to other perspectives. He appears to have rewritten his history.
To date things have gone marvellously for the couple, especially Meghan. She now has the high profile of a royal without the drudge of opening factories on a rainy Thursday in Macclesfield, she has a vocal (and tbh professional) army of supporters. She has opportunities Meghan Markle, actress, could only have dreamt of, purely down to her association with the royal family. She can say what she wants
, when she wants, to whom she wants, and people will listen. Even if people don't like her, the attention, good or bad means $$$$$$$$$ (remember, there's no such thing as bad publicity). Meghan likes the limelight.
They've positioned themselves in roles of altruistic, charitable patronage, and I think it's a bit of an odd place to be for them. OK, so both Harry and Meghan have been involved in charity work before but to make it their job now seems a bit weird.
They've been caught out in silly little fibs and thumping great lies. I expect Harry's book will contain 'inaccuracies'. But of course it's his truth. And it will sell, and those who wish the royal family ill will be happy if it contains salacious titbits.