I strongly disagree of course.
without awesome genetics, no one runs 100m in under 10 seconds.
without superb genetics no one becomes mr olympia - many can become pro, no doubt but no amount of drugs changes muscle shape, proportions etc.
without world class genetics, no one becomes nobel prize winner in physics.
without right genetics no one becomes president (I'm talkin' 'bout real presidents, not some zamboa president)
with proper genetics, you never get cancer no matter what you do.
with wrong genetics, you get cancer no matter how "well" you live.
It's all in our genes when we born. That determines what we can become. Of course training, countless repetitions can make us good at something but that alone never makes us awesome and best in the world in something. Right genetics are required for that.