I didn't read the comments because, well people generally irritate me with their comments (except on 11w). I don't agree with the author's decision; unfortunately, I do not have kids so I cannot speak to that at all.
I was more captivated by the analysis afterwards. I'm 25 years old and I get the feeling that I'm right in the gray area between the parents who let their kids get bumps and bruises, and then the "helicopter" parents that hover over their kids 24/7. Fortunately, I was raised by the former group, and I'd like to think it's given me a tremendous advantage over many of my contemporaries.