I think that makes sense. If the T always answers questions then many paths for exploration will be blocked. Especially the difficult paths that manifest themselves in frustration and even angry feelings to therapist. It is impossible to really explore frustration and anger when it is not in the room.

Some might look at it as if some therapists consciously trigger frustration and anger in their patients. The truth is that these therapists just allow also these kinds of situations happen in therapy, precisely because then it might be possible to explore it (maybe not immediately but only after a while) while "supportive" therapists would perhaps do anything to avoid the patient from getting frustrated or angry to T.