Thank you for being interested in it and actually liking it. Well, when I first read that article I also asked myself that question.
If our genes are some sort of "destiny". Like the ancient greek said, you can't evade your destiny. Maybe they were actually right.
And if that is the case, then maybe we are not as "free" as we thought we were in the first place. It is like we are walking down a line that was written on the moment of our conception. We can't change the line... But can we walk another path? That is one of my questions.