Nobody has addiction problems or goes OTD because of internet, etc. It is always because of emotional problems that were there from BEFORE (caused by bad parenting). This can cause a person to go off or get addicted when he sees these images. Someone that is emotionally healthy and has a good relationship with his parents will not go OTD from these images nor will he get addicted. He will likely do Teshuva and go on with life. This is what most proffesionals in the field say.
R’ Matisyahu says he does not like the word dropouts. He calls them Pushouts!