Earlier quoted context omitted.
Not sure why you think the split is so tilted towards genetics. If TT had been born in some 3rd world country with poor nutrition and crappy education system, how would he be exposed to all the higher level math topics? It's clear you need that exposure, you aren't just going to know things about what mathematicians have thought about and consider important without coming into contact with some.
We have a sample size of 600 + million ppl between the US and Western Europe with full access to food, electricity, and other modern necessities, not third world countries. How many are as smart as him.
I'll accept that nobody is, but his mom was a math teacher. Few of us get that kind of leg up, certainly not 600m+. When I was 5, "don't get shot" was already getting a significant share of my brain's power, and I had it better than most. Sure, he's got a brain like gasoline, but don't discount the spark and oxygen that allowed the genius to deflagrate. And don't just throw numbers around like that if you don't have proof. If you respect the mathematics, act like it.