I think he saw her vulnerability as his chance to sweep in, for sure. I don't think it's as simple as him wanting to "ditch her when she became strong." She was always strong. She was just at her most vulnerable when he met her, and he knew it. He enjoyed feeling like the hero.
Over time he likely felt that he wasn't looked at as quite the hero. He said at one time the relationship went down hill as soon as the children were born. He may have felt less important and less loved as her attention would be more directed at the kids. Either way, it's apparent that he wasn't satisfied with the marriage. But he didn't have the skills to communicate that. He just kind of went with the flow. He was always compliant. Never complained.
Then along comes the love of his life. Maybe it was the first time he felt appreciated in a long time.
I think many people have had similar theories and of course there is so much more to it. So I'm not sure what you mean by inconsistent. The same general theory with some variations have been consistent throughout the whole case. Only now that the documents are out, psychologists are talking about it in the news. And they are basically saying everything that we have been saying from the beginning.
Imo
It is inconsistent when people say he chooses someone like his mother because he is used to abuse.
It is inconsistent when people say she was sick so he liked to be the knight in shining armor ,and then felt he was no longer needed when she became better.
He cannot choose an abusive person when he is choosing to be the knight.
Either he is consistent in choosing abusive mates or he is not.
Either he wants to be seen as the knight in shining armor or he does not.
He is no Scott Peterson. He was the golden child and SW said that CW was second rate in comparison to the sister.
SP did not physically kill his child as did CW.
CW is his own type. He is an FA who only wants a new life. Is his only barricade money to get what he wants? I don’t see religion or failure as a provider or paranoia playing any role. His family was an inconvenience.