I don't necessarily disagree with much of that.

The problem comes when plummeting into full blown determinism. the idea that your choices don't matter, won't effect anything so why bother. It's basically the inevitable outcome of socialism, just not economically.

Being hyper focused on genetics as the sole determiner is just flipping Lysenkoism on it's head and declaring it to be true.

My point is that I'm not trying to tell anyone that they can wish themselves taller. Frankly, being short is essentially a disability for men and that is no lie. Genetics matter, and just like with economics some people are better off than others. Inequality is a fact of life and it is not inherently wrong either. Some people have more money than I did growing up, because of a combination of choices their ancestors made. That doesn't mean I shouldn't try, and lo and behold I am wealthy now, I want for nothing and I have no monetary insecurities.

I'm not suggesting any particular course of action, but I am saying that there is a wrong one.

Nihilism has no good future, either for individuals or society.