[JamisonM]

"the Polgar sisters are proof that training is the key and not genetics"

Look, I don't have a dog in this fight but the idea that the Polgars "prove" that training is more important that genetics doesn't make sense. Evidence maybe, "proof" is just a silly assertion.

They were all born at different times and had different experiences and have different genes!

Here on HN folks are always going on about genes with confident assertions but the number of people that understand the difference between "heritability" and "genetics" seems to be very small.

"Football and basketball do have a "innate talent" component--at the highest levels the competitors are genetic freaks."

This is not a thing you have actual evidence for, and there are players at the highest levels of these sports that don't fit the mould of what you would expect it takes to succeed - it is too broad an assertion.