This post is a few days old, but I think it would have really limited the amount of criticism if you'd also noted that you work at DIY (a company that is promoting kids and teens to make all sorts of things - programming or otherwise) in the post somewhere (even though technically people can see the name in the URL). It makes a lot more sense to note his age when the company he's working for is specifically trying to help younger generations.

Great work regardless, I love everything DIY is doing and it's fantastic they have their target audience in the office!