Yes, as I said in the post you quoted, of course they are going to feel uncomfortable from time to time. But they don't get to talk to their colleagues about specific clients. I guess that if they say something general that is not traceable to a particular client it might not be actionable, but other than that they have to handle it professionally - just as you say - which means that they don't talk to their colleagues about it. I'm sorry, but that's violating client confidentiality, and where I live it could be grounds for reporting the therapist, if the OP wanted to do so. I don't think the T would lose their licence, but I'm pretty sure they would get a warning.