What a dumbass! Lol.
I know it's easier said than done, but kids like that you just have to laugh at. Clearly he has alot to learn. I'm sure you've built more shit than he's even read about online! Just like 99% of the kids that run their mouth.
Honestly I'm pretty disappointed in the way people have treated you that you've helped/given stuff too. A simple thank you goes a long way, I myself probably say it too often but whatever. It's one thing for haters to run their mouth but for people you've helped, that's just ridiculous.
Good luck with handling the "limelight," there are more people who have your back than you know.