That kind of comment was entirely uncalled for. Rude, disrespectful, and belittling. Is there someone more senior to them (a supervising professional perhaps) you can approach?

In my group, the moderators come from the group of peers itself; but, they are given clear guidelines on how to proceed. Present at the meetings are several psychiatric nurses who are there only to observe. The most I have seen them do is hep a moderator regain control of a discussion.(thankfully they are not there to comment on or critically assess the participants).

Can you tell us, as I am curious, how your group operates? Is the discussion portion peer led or led by a professional? In what way does the Therapist participate? Are they an overseer? Are you encouraged to speak or do you find it intimidating?