>Observing that money is a proxy for many desirable traits, and helps, and has helped, in bettering survival chances is not social Darwinism. To assume that the unintelligent wealthy are somehow more lucky, and that morons must be filtered out is.
The unintelligent wealthy are more lucky, because they don't have to struggle. The letter writer struggled his whole life doing things he appears not to enjoy very much to get into the right school, make the right deals, etc, so that he could retire and go live on a diamond-studded houseboat and smoke weed or whatever he's going to do with his life now. If he had been born extremely rich, he could have done what he's doing now from the start. If he had been born moderately rich or an Ivy League legacy, he could have done it with less difficulty.
>Here's a statement: On average, the wealthy are smarter, prettier, and taller, than the not-wealthy.
If you want to select for smarts, looks, or height, then select for smarts, looks, or height, not some proxy which will never be as good as direct measurement.