I find it all the more impressive because he used an environment that was not meant to be used like this.
That's like running the marathon with a handicap and still winning.
And if he can do it in minecraft I think that he'll take like a fish to water once he gets his hands on other, more powerful tools. That's mostly a matter of access, 16 year olds are more likely to have minecraft on the machines they have access to than CAD/HDL software and the hardware to go with it.