If you notice, Boselli is following Hogue's path exactly, he also started with wet underwear, profile poses, semi-erections, then from the video in which he shows a full erection while masturbating without cumming he was more and more relaxed until the last videos where he plays freely with his cock, Pietro used two fingers to pull down his foreskin, as if to say "I'm doing it because I have to" but I'm sure that from the last video onwards we should expect full-length erections and maybe masturbation scenes... I think he was inspired by Hogue for how to move on Onlyfans...