I’ve no doubt that from the start, remember that Ill advised letter about collaborating with the queen, they have thought they are doing the right thing.
I also believe this is all them, and nearly all Harry. Someone who worked with them said it’s incredibly difficult as they only listen to each other and egg each other on, they do not listen to anyone else.
So advising them, even when that’s what they are paying you handsomely to do, is beyond impossible. They simply focus on each other and enable each other to the exclusion of everyone else. I suspect that’s true.
They don’t have the skills, the knowledge base, the experience, even possibly the intelligence to think through their actions, the repercussions of those actions , and not many would do. To manage this unique shitstorm would take a host of experts. They are basically flying solo, doing their own thing, enabling each other. And the more it goes wrong for them, the more they do, and the worse it gets.
Mental illness by definition can make people very selfish and self focused. I am sure Harry loves his family. But right now he is not thinking of rhe pain he is inflicting on his father, his brother, his grand mother, he is simply thinking of himself. I don’t think he is even thinking of his heavily pregnant wife, who has faded into the back ground, or his child/children, of future relationships. He is simply focused on himself.