I have a 17 y/o who I wish grew up in Denmark. Of note, he tested about 125 IQ when he was 8, but over 150 when he was 14. Our son has ASD as well, and the 1.5x made all the difference (per the IQ test time). And the IQ test score is all that matters in the USA. 125 forget it, 130+ you are in something called a Gifted program.
Even so, there are very few places in the USA that are good for gifted, let alone truly neurodivergent thinkers and parents have little support (it's very sad).
I have ironically spoken to Temple Grandin and she is so approachable. When we were in the State of PA (East Coast of US), she told us to move West where you can more easily homeschool and take University classes. That is what our boy does now, but we had to give up everything to move from the rigid East Coast (State of PA) to the State of NV (the land of any educational path). We could not break away from the East Coast "classical" stuff until 10th grade, which is why we left.
What we learned is that children like our son (your son and others here) are autodidacts and learn no matter what the obstacle (they love to teach themselves). You cannot contain that as we have learned, and our son went and taught himself Calculus because no one else would (in 9th-10th grade) The sky is the limit for kids like ours, albeit mine wasn't ever supported until he came to the State of NV.
A funny note that our son started with Danish legos before anything else. No TV or internet either at a young age, except the series "Cosmos"
