Hmm, has knowing your MBTI helped you though? I did a couple similar exercises in the past at work. It felt like a great revelation at first, but I always forgot about it soon after and stuck to how I was.
It helps in a way that the chatbot knows more about the person's personality than people may have realized. And that is helpful it comes to therapy communication and state of mind. IMHO
However, the way I think about it is that people respond better to different way of communication, and knowing a person's preferred styled of communication will be helpful in helping a person open up and get to the root of issue.