I think that sometimes it can be really difficult to differentiate between realistic and impossible wishes. I guess this difference is never really expressed explicitly in words. And it is really difficult for people not involved to judge without proper context what's really going on. For instance, we you take the cited quotation out of context then it might really seems that the therapist wants the client to give up something unreasonably. But if the reality is that the client can't really enjoy any of the real life relationships then it is likely that in the background there is some kind of impossible wish that makes accepting possible things impossible.

Now what you describe about your own experience seems a completely different issue to me. I see no reason for a therapist not accepting the clients sexual feelings and wanting to get rid of them other than being unprofessional. I'm sorry that your T was like that. I've said and written all sorts of crazy things to my T, some of my fantasies have been so disgusting that have horrified me a great deal. Never has he taken those things as something that I would really want. Rather he has always taken them as feelings/fantasies emerging from somewhere to be explored.

I think in your circumstances it very much makes sense to internalise disagreement with that T, assuming that he wanted you to get rid of some parts of yourself. I see nothing wrong or bad you having sexual feelings for him and I'm sorry that he was not willing to accept that part of you and explore the meaning of those feelings for you.