I think mental health professionals responsibility to act on these things is a very controversial, gray area unless there are clear acts of violence or self-destruction. From all I know, they often have anxiety about this and "err on the side of caution" more to prevent themselves getting into trouble later. Threatening involuntary commitment prematurely also just discourages a client to be open and honest about their feelings, IMO - just like how you feel now, that you don't even want to go back.

I personally would never give a psychotherapist my address, emergency contact or anything similar, for the above reason. I was never asked for those either by my two private therapists and would not see one who demands it. Would not want to go through unnecessary hurdles due to their wrong judgment or fear as I know myself, what I am capable of doing and what is an impossibility. If someone does not have those perceptions intact, then it is a different situation, you did not say about the severity of your condition and history. You mentioned anger issues - that might be something pressing their alarms. Again, this all is nowhere near a black and white issue. I guess the only things you can do to protect yourself is not to give them personal information or to watch your expressions in the future, perhaps elaborate in more detail to make it clear when it is just a feeling you want to share and no possibility for any harmful action.