Anything and everything seems to be classed as child abuse now, why do you think we have the teenage yobs, at least here in the UK. Although granted this would probably warrant it, I get the feeling that most of those stories are people acting out a strange vision in their heads rather than what actually happened to them!
I mean so many parents say "if you want to act like a baby, you will be treated like one" but I don't know of any who actually carried anything out of that affect apart from a usual grounding or taking a games console away (for the boys!). Even if it was that severe and they were forced into them I wouldn't imagine too many parents saying ok now you have to use them. I imagine the humiliation of being in one for 10 minutes would be bad enough at a young age. Although from reading some posts on here it does seem to have happened before, I feel sorry for them for that to happen.