The thing is, he doesn't know what's normal. He's been brought up in a strange bubble with everything done for him. He's felt alienated and sidelined for years within that system. He's seen his beloved mother suffer within that system and speak out very vocally about it. He feels his mother died because of negligence, but he isn't too sure who was responsible, but he suspects its the Press, because the Palace didn't shut the Press down or stop them chasing her. He also feels that lack of security was an issue. I don't get the impression anyone really talked to him in a straight way about any of these things, they were brushed under the carpet. In some way he still has a child's understanding of the events that shaped his life. He went along with the system for years, but underneath he was a very angry, disturbed young man with poor boundaries and no strong role models. He seems to have had aides who he was close to at times who acted as father figures, but when he married, he lost all that.
Along comes a gorgeous worldly woman when he least expects it, and after a couple of failed long term relationships with women who didn't want the hassle of marrying into his family. I think he had probably been longing for a family of his own and a woman who adored him , not least because he watched William's life and envied it. So he fell for Meghan hook line and sinker because she pressed all his buttons and promised him the earth. There was no shirking from taking on the role within the RF either. I bet he couldn't believe his luck. When William expressed concerns, he viewed these reservations as jealousy and an attempt to undermine him. Perhaps because Meghan suggested this herself.
She has worked him like a puppet from day one, feeding his insecurities, playing on his fears, exploiting the memory of his mother for her own ends. I don't actually think he knows which way is up anymore, what the truth is, what's going on in his own life. On these fake foreign tours he looks like he doesn't know what's hit him. He looks dazed, confused and bewildered. I don't know what it will take to make him wake up, but I suspect she will leave him and then the walls will fall down.