That's just clearly not true. Look at the high end of any sport and you see obvious genetic advantages. Basketball is particularly obvious, because height is so important. Nate Robinson could jump just as high at LeBron James, but at 1.75m (5'9") he was never going to be as successful at basketball as the 2.06m (6'9") LeBron. There are plenty of basketball players who would have never got on the court if they weren't as tall as they are. No amount of passion is going to make you taller.
I'm thinking that the domain of (competitive) sports is an outlier as such as it's probably the one domain where physical properties like muscle structure, height etc. have the biggest impact on "performance".
But the discussion in the article is not about performing to a high level in order to accomplish a certain outcome (win the match), it's more about exploring one self and honing a certain talent to reach deeper levels of self-expression and self-actualization: OP has a unique way of playing the piano, and they honed it by pouring love and time into it. They would probably not perform super well in some kind of piano contest where you need to play by ear, for example. And that's not the point I got.
Everyone can principally pour love and time into any domain or activity. A 1.50m tall person can explore and hone their basketball talent in order to form a deeper understanding of that part of themselves and share it with the world.
