Look I had to pick a title that would resonate with people on what they might not want their kids to read. I'm sorry I offended you that people might want to censor the materials a child might read but it's a very common use case, so much in fact that there have been class action lawsuits against companies like amazon/apple/google/sony/microsoft for not allowing parental controls (and not locking the kids out of buying smurfberries).
And yes, as a parent it's part of my job, and my right, to pick and choose what I think my kid is ready for.
> I'm sorry I offended you that people might want to censor the materials a child might read
No offense taken - I'm not sure why you think that.
I suppose people do want to limit what books children read - I still think that's generally misguided - but your points on people actually wanting parental controls are well made.
I still think parents would be better off celebrating reading comprehension than censoring books (Now discussing books with your child is a different matter).
At any rate I guess the prevalence of trash/spam on Amazon is higher than your average library - so there's that...
And yes, as a parent it's part of my job, and my right, to pick and choose what I think my kid is ready for.