I posted on another similar thread (think that one was about Jurassic Park). I am definitely in the err-on-the-side-of-caution camp.
I do see it as part of a general trend to try and make children grow up as soon as possible, forever moving them onto more mature pursuits. I see it with toys as well. People saying their six year olds have grown out of toys, or at least that they have grown out of cars/baby dolls/dinosaurs because they have now moved onto the more sophisticated Star Wars/Monster High/whatever. Toys are what you make of them - liking baby dolls shouldn't be less sophisticated than liking Monster High, they are different interests, but I am
at the way it is seen as a sign of greater maturity.
Marketers foist characters onto young kids who are too young to read the book or see the film or whatever, and then when the children are old enough, they don't want to, because they think the characters are babyish.
Winnie the Pooh is a good example of this, or traditional Fairy Tales; you get Winnie the Pooh all over babygrows and toddler toys, but in fact to appreciate the wit and humour of the books, you'd be better off reading them as an 8 year old. And Fairy Tales are seen as "babyish" too - I've seen so many board books with sanitised versions aimed at young children, with any gruesome parts cut out and everyone living happily ever after.
DD (just 8) has recently been reading a more traditional version of Grimm's stories, and she is glued to them, totally gripped. She told her cousin she was reading Snow White, and her cousin laughed, and said they were baby stories, and BIL was all faux-shocked, acting like DD should be reading more "grown-up" things ("I thought she'd be on Harry Potter by now".
But the Grimm's stories are really dark, not for a toddler. So why ruin them with pallid imitations? (And I'm saving Harry Potter for when I think DD will really appreciate it - this year, quite probably, but what's wrong with waiting a bit?) What is the rush to make our children grow up so quickly?