I'm sure you've gotten a lot of good feedback, but a personal message for your kid: I am well into my adulthood, but I started programming from a similar place way back when. I was probably 12-13 when I was self-studying HTML/CSS/JavaScript. Today the web tech stack is way more complicated than it was when I was a kid, but its also way more capable. You can do so much with it now that was a dream - I was into pokemon…
This cannot be used to date you. Kids these days (and presumably anywhere in between) are still into pokemon. Just today it’s Koraidon and Miraidon.