Therapy is provided by professionals. And those professions have rules and regulations. Therefore, like other professionals, the therapists are never truly "real" with customers or clients or patients or whatever. They do what is required of them. In fact, based on some of their ethics, they might feel that anything else would be unethical, like if they decided to relax and shoot the breeze. Not when you're paying them.

The goal is to make the client feel better and back functioning again. Obviously if they come across as too fake and make the client uncomfortable, that's not productive for the work either. So they will try to come across as genuine, as much as possible. But they can't and won't be fully genuine.