Even among the people who have similar "luck" in that respect, some still stand out. The people we think of as elite performers aren't just elite relative to the 99% of us. They're also elite within the top 1% that makes up their field: they're dominant even among the people who should be their peers.
Not that I mean the percentages factually, more like an order of magnitude.
But my point is, in terms of "natural ability", I don't believe there is that much of a gap among top performers, but that things like work ethic and determination, and also some luck in environments, is what ends up setting them apart.
That's why I think they're worth praising: it's not just a spin of genetic roulette (unless one believes every single attribute about us is genetic, I guess).
You could be right; I tend to disagree but its all speculation. My 2 cents is that the vast majority of researches/professors are motivated and driven people; you can't reach those levels if you don't know how to sit on your butt and concentrate. They all have good work ethic. I tend to think what separates Tao from the rest of the smart researchers is not that he works 15 hours a day while the rest work only 9 but rather his very very rare genius. But yeah, speculation of talent vs work ethic.