Regardless of whether the therapist knows best or not, as you know, I am of the opinion that it is absolutely the T's right to decide they are unwilling or unable to change the manner in which the T practices just because his or her method makes the client angry. If the T truly believes his or her way is in the best interest of the client, I do not believe the client gets to demand the therapist change. The client can stay and deal with the therapist's methods (and stop agonizing and raging against it) or the client can leave.