Probably not that many, except for those who failed to turn on parental controls and/or approval codes. And even then they have the ability to cancel the order up until right before it ships. And since Amazon notifies you of pending orders, there is little excuse for not catching the order soon after it is erroneously placed. And even if they didn't catch it, perhaps they walk around with their head up their backsides all the time, they can send it back to Amazon at Amazon's expense. So it really is not a big deal, although I'm sure many will blow it way out of proportion just like the pseudo-journalists we have these days tend to do.

It is pretty simple concept: Don't want any unplanned children, then take precautions. Don't want any accidental orders from Amazon, then take precautions. No physics or neural science involved. Just plain old common sense. And for those who are too stupid to use common sense, well you can't fix stupid...