I see a human counselor, but I know at least two people in my close circle that talk to chatbots already to get through their thoughts.

Anthropic's recent data release shows that many users seek counsel from Claude.

There are at least three large offerings to companies as a counseling-like mental health benefit offering that costs companies much less than when employees seek traditional medical billing counseling.

I think the answer to how close is obvious: it has happened. And for some people who do not want to talk to a human counselor for whatever reason, this might be an angle to help meet mental health needs that reaches a new audience.