The text doesn't read as if he's blaming his parents for anything. It seems to be a pretty neutral acknowledgement of past harms so he can move past them. Any "blame" you're reading into it is purely coming from your own perspective. He's pretty explicit about that:

> Yet I forgave: I have other things to attend to if I truly want to get over what happened.

I'd say his recovery/therapy is going pretty well. His perspective on the situation seems healthier than yours.