The neutral position is that people who are better at something even by relatively small amounts will receive outsized rewards for it. Are you trying to claim that people are not legitimately better than others at a variety of activities? There's nothing moralistic in observing that - it's really just a fact. Some people are, for example, "better" swimmers than others. Some sports franchises are better than others, etc.
That is the sense the author used the word "better" in - to describe the initial cause that results in a power law distribution. He never praises people for accumulating wins and outsized rewards, he merely observes that it is the case. "Better" in this sense is not being used to describe classes of people, it's being used to describe small advantages.
If anything, the author is probably doing the opposite of your claim here, in that he would probably agree a lot of the reward is due to initial luck. If I observe that people who inherit wealth are more likely to accumulate more wealth, am I implicitly defending that phenomenon?
EDIT: For whoever is doing so - I don't mind if you downvote me, really. But several of my comments have just been downvoted once or so without any actual reply. If you disagree, you should consider engaging in a proper response. Letting my comments stand may as well be conceding the point, and if you actually have a persuasive counter it's certainly not going to help the discussion (or your stance) by keeping it to yourself.