In US healthcare including therapists are quite expensive.
Back in the day I was an indie dev and that was really hard on me. In my lows I thought I’d seek a therapist but at $500/half hour appointment that felt like a gut punch. Didn’t have any insurance then.
ChatGPT is instantly available and free. Yes, it’s not perfect but it’s better than nothing.
For a large part of US, mental therapists are not really accessible when they most need it.