Arts said:

there is research on child sex dolls that points to them increasing harm. but, more importantly, no evidence that there is a therapeutic benefit.

Brown R & Shelling J 2019. Exploring the implications of child sex dolls. Trends & issues in crime and criminal justice no. 570. Canberra: Australian Institute of Criminology. https://www.aic.gov.au/publications/tandi/tandi570

While you’re here, Arts, and on a similar subject, Lenny Bruce was an American comedian who was in the US Navy for most of WWII; after the war he joined the merchant marine. He said that when whatever ship he was on docked in Paris he and his shipmate on shore leave would go to a particular brothel. The most popular girl there dressed and behaved like a child; she said that her clients “needed to feel that they were taking her innocence.”

Is there any evidence that men using a (voluntary) worker to do those things reduces or increases sexual assault on children?