It really depends. My T uses 'weird' adjectives (not really derogatory, but still not really accepted ones in my language) for homosexual people. But I don't have an issue with it, even though those adjectives are directed at how I feel.

If YOU feel it's not okay, then either if you have a good rapport talk to your therapist, tell them how you feel and what bothers you, or otherwise search a good one. If you don't feel offended or bothered by what they say (though from your post I'd say otherwise), it doesn't really matter what the appropriate wording would be.