I got my start around 11 but kinda squandered it. Spent most of my time reading about random obscure languages/technologies/frameworks I wouldn’t understand until years later (though it’s great because I can hold a conversation on a topic for a little bit while being completely incompetent) and swearing I was going to make games until I realized I couldn’t do asset design worth shit. To this day I don’t think I’ve ever made (graphical) game.
I was around 14 when I first heard about Haskell, I didn’t know anything about it, functional programming, type theory, lambda calculus or anything related. I just knew it was a programming language. Nowadays I see people around that age programming relatively fluently with it.
All the actual programming I ever did as a kid was make terrible websites, console apps that did nothing useful in particular and a few desktop app shells that did the same. I was probably around 17 before I did anything “serious” and even at that point it wasn’t great.
Now I’m not very old, so I’m not sure if it was simply the environment I was in, but I didn’t know that many other people that were into programming when I was a teenager, even with the internet and all I was normally the youngest guy in every chat/forum/site/group I was on. Nowadays though, I know several teenagers that could code circles around me.