Did it become "interesting" or was it just the same thing with "someone else"? If you really think about it, Daval reused a lot of the scenarios he had already used with Sarah and David, i.e. sexual contact in the bathroom in her under garments, sexual contact behind a door barely open while Aaron was looking for Sarah, blowjob while crouched down behind the kitchen counter, sex while fully naked on the male character's bed, in the male character's bedroom. Daval essentially repeated chapters 1-3, with chapters 4-6 (the motel scene being the exception.) The only real difference was that David was replaced by Uncle Peter. I think there are just those who don't like that Sarah pretty much dictated when and where she and David had sex, whereas Uncle Peter was manipulative, aggressive, and forceful. While one can glean an Oedipal theme in Sarah and David's encounters, one can hardly, if at all, glean any male-power dynamic. That's where Uncle Peter comes in, but he lacks the Oedipal appeal since he's a lot older than Sarah. It's essentially the core aspects of Daniel's character split into two, and that's where I believe Daval polarized his audience with MT. At the end of the day, the predominantly male audience is going to set up camp in one of the male character's sexual prospects, and unfortunately for Peter fans, the David fans are larger in number and more vocal.