I was speaking to the general experience of these sorts of threads posted in which clients repeatedly experience doubts about the relationships in therapy. That wasn't your experience but it seems that you brought different expectations to therapy.

There are certainly Ts that work in a transactional manner; but those are Ts that aren't working within a relationship philosophy. I don't see Ts that work that way. If I did, it wouldn't matter if they were authentic because authenticity isn't a component of such work. But most of these sorts of "is the relationship fake" threads seem to be from posters looking for a relationship.