There were no multiple personalities. It was a fraud. Notice how prominent psychologists were willingly fooled and created a whole new false construct they could now talk about as if it were real.
Same thing with “trans.”
We had psychiatrist in The Fox Valley in Wisconsin who diagnosed just about every one of his patients as MPD. He created absolute chaos. Destroyed marriages and families as he convinced all these people they had been sexually abused and had Satanic rituals via hypnosis and “regression therapy”.
He finally went down when he got caught billing insurance for “group therapy” for INDIVIDUAL patients. In one case he billed a woman and one of the personalities was..... a DUCK. ( My argument was he violated the State Veterinary Practice Act).
Here’s an article about this guy....
https://www.nydailynews.com/archives/news/doc-billed-120-personalities-article-1.766795