It seems just as plausible that viewing such depictions could feed into someone's urges. Without some evidence I'd be hesitant to go with someone's conjectures

It seems just as plausible that viewing such depictions could feed into someone's urges. Without some evidence I'd be hesitant to go with someone's conjectures here. There is also, frankly, the fact that a lot of people find viewing such stuff so shockingly depraved that they don't care if someone is "actually" harmed in the process, a claim that is hard to evaluate in the first place.