Agreed. Approaching psychology with a permanent kind of rigour simply doesn't work. In order to change the mind that is not functioning in the way one desires, one has to believe that mind can change. Presenting information as though it's impermeable, absolute, matter of fact truth since the event(?) that allowed humans to first begin to think is absolutely absurd. If humans can go through all the different variations of thought they have gone through thus far, why do we work with the assumption that there's any absolute truth to the nature of thought to begin with?
Therapeutic models have to be adaptive to the individual one is guiding towards mental wellness (or whatever the goal is). Someone undergoing the process of regaining trust in their own mind has to pass some of their own personally designed tests. Otherwise they are just consuming information that already exists, and that's back to the original problem - one can only trust in information that comes from others, and not from the individual self (unless it matches perfectly with others). That's paradoxical, and if all oneself can do is reproduce what already exists, one can not prove to oneself that one is different or has changed or has improved, from 'before therapy'. So psychology is going to keep changing. It has to.
That's what students of psychology are interested in, right? Why force the model they learned that at one point, made absolute sense, to the student, at a prior time, onto others? What is the purpose of that?
I think that stuff is obvious when it's out in the open, but every student, researcher, and doctor of psychology has their own fears and 'issues' to deal with. What if I get it wrong? What if I screw it up really badly for someone else? Didn't I go into this to help people? And I think those kinds of fears, if they are not dealt with in a responsible, respectful manner - can really control the dynamic far more than all the knowledge one has access to, and all the thought and reason one can muster.