I’ve had a few conversations with people who use ChatGPT as a therapist. There is real danger of using LLMs that are engineered agree with you, at least in terms of therapy.
Even if "AI cannot legally do therapy", nothing would stop people from crying their soul out to a "Gangster Sponge Bob" persona on some "funny novelty chatbot" website.
AI Therapists? No rules! Do what you want! Move fast, break people! (Except in Illinois. They fortunately banned AI use in therapy)