I think however that some of this type of approach really panders to the lowest common denominator and suppresses learning by experience.
When Jnr Jnr first starting making airplane models I was really nervous about a sharp craft knife in the hands of an 8 year old. He's still got all of his fingers and hasn't adopted self-mutilation as a form of entertainment. I shouldn't have been surprised, I did all of that stuff too and survived - so really we can provide stifflingly safe environments or we can provide information and advice to minimise risks and allow people to make their own decisions.
(Today's post was brought to you care of the Libertarian Party. Proudly supporting books since Chaucer discovered them)