I am not sure this is sarcastic. I would not be surprised if this was a real product, used to abuse a child in the US. Americans are that kind of crazy.
I mean it's a real product.... But usually it's a different kind of mommy. Or daddy, I don't judge. I mean unless you're the actual parent, in which case I judge harshly.
The product is real, is a chastity lock and is a sex stuff, usually by dommes on her submissive partners.
And about the veracity of the review, I don’t know, I hope it is fake, but I remember reading many years ago a case were a woman was charged with child abuse for putting anal plugs on her son “to avoid the devil entering the child’s body through the anus”.
Probably? While it's weird and gross enough to current sensibilities to be sarcasm, these devices were absolutely used to prevent masturbation for several decades in the US so...who the fuck knows...?
People post this kind of stuff in the reviews for every kinky item on Amazon, I've never understood the compulsion to share your fic in that medium but I guess some folks gotta write when the inspiration hits 'em...