The one quote that I really like in the article was from his "fan" headmaster, David Gee. "I think he’s a great example of someone who has followed his passion, hasn’t let age be a barrier and hasn’t said ‘well I can’t do this because I’m 17’" That's a fantastic sentiment, and I share it. The most tragic reason to fail is because of some delusional belief that failure is tied to some innate quality like age.
Note that these two sentiments are not at odds! It's true that context can prevent your success, but we don't usually know which part of that context is to blame.