196

I'm only aware of one study which is somewhat relevant: there was limited access to porn in Czechoslovakia during the communist era. After the revolution when porn became readily available, the number of reported cases of child sex abuse lowered and rapes stayed about the same, while violent crime in general shot up (as is to be expected when a country stops being a police state, crime goes up).

The study is here:

https://www.hawaii.edu/PCSS/biblio/articles/2010to2014/2010-czech-porn-abstract.html

I used to be firmly in the "no good evidence one way or another" camp like you seem to be for long, this makes me lean towards "drawings could probably help", though of course more research is needed.