I just wanted to add that with the T my son is seeing right now, I'm very "hands off". I only sit in on the session when I'm invited (usually by my son). I think it's important for him to have that relationship without me intervening, but my son is very open with me and I feel that he is in the right place with this T. The message I got from your original post is that your son and his T have different goals in mind. If that is the case, I believe parents should be advocating for their children. What does your son think about all of this?

There was a time when therapy was not working for my son - that was the point where I stepped in and pointed out the needs and where the disconnect was.
Kids need to feel a connection and unified goal with their therapists, just like we do. If the therapeutic relationship is not benefiting your son, by all means stand up for him!