This idea has been floated before. I think there is already an unused social group out there. People said they preferred not to be excluded / ostracised from the main psychotherapy forum for not holding positive opinions.

See post #14 in the thread below. It takes you to an invitation only social group. I dont think the person who created it is still active, but maybe the ownership can be transferred?

https://forums.psychcentral.com/psyc...ayed-t-11.html