No that wouldn’t. People have various blessings. Some are athletic. Is that “unfair”? Some are more intelligent. Fair? You are conflating egalitarian with equality. They are different.
Your standard could never work. It has no practical way to be done.
There are ways it could be done. What's the alternative? Maintain the status quo and hope for the best?
I don't believe in blessings. Yes, as you say, some are more athletic, some are more intelligent, some are stronger, and so on. Everyone is born with different strengths and weaknesses, so you're really just stating the obvious. I'm not conflating anything, as I don't recall using either of those terms in this discussion.
However, since you bring up equality, I would say that, for much of the past 250 or so years, a great deal of focus has been placed on the rights of human beings. It was a bit dodgy at first, as the rights didn't apply to all in the U.S. for a great many years. However, over time, our political values changed to where some people started believing that even the poor, downtrodden, and oppressed should be treated with some degree of fairness, dignity, and justice. Western liberals believed in that, which is how many of these social programs and other reforms (which conservatives and capitalists often deride) came about in the first place. Regardless of whether they're athletic enough or intelligent enough, simple human principles like kindness and decency were woven into the political culture.
In other societies, with a more predatory philosophy, they've been more prone to revolution and upheaval. We've been fortunate that we haven't really any
major upheavals since the Civil War. We are far better off favoring policies which engender political stability and harmony, as opposed to "he who dies with the most toys wins." The predatory, dog-eat-dog, social Darwinist society advocated by laissez faire capitalists would be a step backward for human civilization. Capitalism is just a phase that we've been going through, but now it's time to move on to the next level in human development.
Capitalism really can't last anyway. We're already seeing some indication of shortages and disruptions of supply chains due to the pandemic. Do we have enough resources to maintain this consumerist, shop-til-you-drop bubble economy which they've been propping up since the Reagan era? How's our nation's credit rating these days? Eventually, the till will run dry, just like Lake Mead.