But it is not impossible or unrealistic in any true sense (other than that they usually do not) for the therapist to explain - clearly and directly and without blaming the client - why they will not or cannot continue to do therapy with the client.
I am all for saying no side need continue if they change their minds but I think the therapist getting to be unclear and all hiding behind all sorts of things they put in place to protect themselves is off.

I am not therapy's biggest fan and I have no idea how or why most people do it the way they do, but my partner is one of those who greatly benefits from it - both internally and externally and although I don't understand how or why it helps her, I do know it does. She adores her therapist and looks forward to therapy and so on. Boggling to me - yes, but for her, it has changed her life in some very positive ways and helped her deal with some seriously messed up parents and the ill after effects of being raised by monsters.