In general it’s correct that watching porn is unhealthy as far as psychological effects are concerned with regards to how people then interact in person with the opposite sex. Then again, there’s evidence that it helps reduce rapes because once you’ve gotten off you’ve satiated at least a good chunk of your sexual appetite for the time being.

Overall it’s probably the fact that almost 100% of the dolls look more like a girl that does porn than most of the women that guys interact with in real life during their daily lives.

I bet someone will eventually do a legit study of men who have or have used sex dolls and will find that the introduction of sex dolls drastically reduces the number of rapes. Then there will be some sort of bullshit fake movement to artificially pump up the rape numbers to levels higher than pre-sex doll numbers in order to argue that the sex dolls are causing an increased number of rapes.