WIY, so tell me then, how could the children of a Rosh Yeshiva be so shallow that they would watch TV behind their parents back? Where is their shtarkeit and backbone? Something is missing if children from such a temimisdik foundation could allow themselves to be sidetracked or distracted! Shouldn’t they themselves have a hashpoah on the OTD kid?
This is where your theory doesn’t hold water. There is something missing to the story. There has to be something already happening with the child that would weaken his resolve to allow him to be persuaded by the other child. Either to be persuaded to look at improper magazines or TV, or whatever. If he was strong in his beliefs it wouldn’t happen.