No, it couldn't be, you're absolutely right (btw, I haven't been paying attention. Is it absolutely certain that all this stuff was going on? Is this a matter of public record in open court? I'm simply curious because I haven't seen anything other than discussions about it in here. The press certainly hasn't talked much about it).
I remember reading somewhere, an article about a "swinging" couple that had some kids, at least one of 'em around 12 years old. These people didn't try to conceal anything but they made sure the kids were somewhere else when they had one of their "weekends."
Anyway, after one such, their twelve-year-old asked them "You were all having sex while I was at Jimmy's, weren't you?" They said, "Uh, well, yes, why do you ask?" "Because it always smells kinda funny around after you've been doing it. Kind of like stale bread."
So it goes.