Any critic worth a listen can tailor their message to their audience. Some messages which make sense for a fourteen year old boy don't for a forty-four year man - e.g. "stay in school."
Children are not miniature adults.
We have at least one counter example here on HN.
I do not think a 14 year old should be given special privilege over a 40 year old. But, posting "I am 14 years old" is not a bad thing, but a sign of putting one's self out there.
That 14 year old might go to a hackathon next week, meet lots of kids/young adults like him, hack even more, study comp sci (or not), and become a terrific engineer who builds awesome stuff. Or maybe his hobby dies out and he becomes a doctor or a psychologist or something. Doesn't matter. The point is that the 14 year old is far more malleable than the 40 year old, and we can make a much bigger positive impact on younger kids than we can on 40 year olds.
To the 14 year old, "First App" is probably synonymous with "I am 14." Give these kids a break.