I clicked on this thinking my answer would be no but I think that there is a lot of evidence that porn use escalates so men start wanking to normal porn but then become numb to it so then start watching rough sex and then become numb to it and so on and so on until it ends up with watching illegal porn over time.
Stands to reason that the same is likely to occur if a man is given a very realistic doll he can do what he likes too.
Sadly it would be impossible to ban or regulate so it won't happen but I think it is an unhealthy thing to have freely on the market and with time they will become cheaper and cheaper and more realistic.
Won't be long before there will be the first stories of serial killers who started with dolls and then graduated to real women.