It appears from examples my wife quotes that his wife and some therapist are putting words in his mouth and in his dialogue in the book.
Meghan thought that once married, she and Harry would be co-Princess and Prince with William and Kate and that as the most glamorous of the four, she would take over the spotlight for years to come in the UK. When she realized that such a co-equal footing would never be afforded her and that Royals were confined to a set behavior and not Celebrities able to demand anything, she started this Sh*tShow to crash it all in pique.
Yes, I think she figured out very early that she would never be on the same level as Kate and planned the entire exit before she was even married.
It’s never a good sign when the bride has no family members attend her wedding except one felon.