I think therapists that say such things are ignorant, dangerous, and stepping way beyond their place in the mental health treatment realm. What they should be saying is that they will do their best to help you find stability by teaching you the skills and methods to help you do so, and be an important support in the process along the way. If that leads to medication reductions, fine, but all medication decisions are up to your psychiatrist. Frankly, it sounds like your therapist is assuming they can meet certain goals that are not possible or counting chickens before they're hatched. A pdoc that would say such a thing would seem excessively confident, too. Imagine someone saying "I will cure you in one year!" Such a person would seem like a charlatan to me.

I had a therapist who thought he could recommend medications. That wouldn't be that bad, but it was in the aggressive way that he did it. I had to quit him.