“Why I did it.”
It’s a dumb reason. He provides reasons why someone might want to claim the moon, but none for why anyone else should pay any heed whatsoever to such a claim.
Even ignoring the fact that it would be a blatant violation of the Outer Space Treaty, there is no traditional or even historical basis on which the nation could claim the entire body, nor is it necessary. Even if we could get an international consensus that off-planet property rights, or even sovereignty claims, are a good thing, we have to establish some criteria for making such claims beyond the fact that we stuck a flag on it four decades ago. Traditional claims, at least in modern times, involve actually occupying and improving the claim. For the U.S. to claim the entire moon without having even bothered to do anything significant on any part of it for almost half a century would rightly be viewed as almost as ludicrous as the Eros claim a few years back. It’s a planet too far.