Pot is only for the relief of symptoms, and should not be considered a “cure”.
And is certainly no substitute for group therapy and/or CBT.
It does relieve symptoms for many, and sometimes that’s enough to keep them in the program.
I’ve read the literature. And I’ve participated in the VA programs.
Eye move desensitization reprogramming (emery) is more effective as is individualized cognitive behavior therapy (cat). They have been testing and following treatments with MMDA and a couple of other psychedelics that may have promise. Those studies are for short term intensive treatment