They took that away because he fucked a teenage patient. College kid came to him for depression, he gave her a job and had sex with her.
They were going to supervise his practice and let him keep his license, but he gave it up rather than submit to supervision.
There are a couple of stories of addicts on his show being offered drugs before they went on to make them relapse/seem worse. The show was basically an exploitation of people desperate enough to take public humiliation in exchange for mental health “help.”
I think he’s in part responsible for a lot of terrible attitudes about mental health - a popular understanding that “tough love” is a helpful approach, a refusal to acknowledge the impact of trauma… A general problem with America seems to be viewing TV show personalities as “experts.”