Is the reason he said that that you were making threats to kill yourself all the time? I don't remember if it was you or someone else (maybe on a completely different website) that was talking about this before. Their T felt like he was being taken emotionally hostage because they kept threatening suicide. I think the T felt that the expressions of SI were a manifestation of their BPD rather than actual ideation. Iirc, they ended up being terminated and referred to DBT. The more I think about it, the more I think the person who posted this was the therapist, not the client. So not you. And who knows about the client's side of that story.

I seem to recall you have BPD, though - maybe he's working off of the same sort of logic? Not saying that's right for him to do, just wondering where he got the bizarre idea that this is a topic that should be restricted.