Dogmatism and close-mindedness, especially about obviously way too exaggerated claims about the power of the "treatment" and themselves, such as Ts can reparent clients and it is the relationship that heals, in general. Most professionals, these days, agree about the importance of individual differences in principle, but many/often fail to practice that principle. One thing about one person's reactions/behavior can mean one thing, the same in another an entirely different thing. They often get away with not doing much/anything and collecting money, because clients buy into those claims that the profession makes... including the one that if just keeps going, eventually some magic will happen. They should acknowledge more that, in many cases, therapy is simply a form of social interaction, not some kind of systematic procedure or treatment. Why it is so hit or miss.