My impression is that if the therapist is not doing or saying anything in particular that you can point to as demeaning, then the "demeaned" feeling is not caused by their actions but rather by your attitude towards them.

He should know some things better than you, at least within his field of study, assuming that you do not have the same educational background. That's why he gets paid. This does not mean he is smarter than you or that he knows more than you about everything always. But about psychology and therapy, well, I hope he knows more than his clients, otherwise he shouldn't have a degree.