The link you posted reeks strongly of crackpot,

Totally. That's why I added the disclaimer. I edited it a bit to make that more clear. The author matches all criteria for crackpot no doubt. But even a crackpot can stumble upon something.

I do not have credentials in astronomy. I'm somewhat well-read in the subject and can handle sufficient math. And when checking the presented data (I did actual SDSS queries; the SDSS explorer and query facilities are genuinely cool) it appears that there is something to his claims - if not to his theory itself.