Something tells me the whole story is not being shared here.
Agreed... Look at the vague way the mom paraphrases it
"he had sexual urges towards his siblings, as well as other children"
a vague phrase like 'other children' could mean this 15yo boy wanting to fuck a 17yo girl since 17 is a minor/child
tbh this whole thing sounds like a LARP he told to freak his mom out, why else would you say "I'd tape their mouth shut to keep them quiet"
Robbie is just trying to traumatize Kristin because he realized early it was clown world and he had no hopes so might as well delight in upsetting her to punish her for her neglect
I'm going to assume he was circumcised and realized around age 15 how fucked up what was done to him was
Notice we have no actual interview with this kid to speak up for himself, it's all 2nd hand.
Robbie, when they let you out of this asylum they've commmited you to, please join and give us your side of things, we want to get to know you.
this kid prob saw his mom cucking his dad with her brother like in Game of Thrones so they told a bunch of lies to psychs about him to shut him up so he would lose credibility