I'm not amazed in the least...
I will often cite Jeff's articles to our developers and also to people I know outside of work.
He is one of those people whose name has become a Brand in its own right; if you need to confirm a way of doing something and the bit of SQL advice confirming your idea has Jeff's name on it, you say to yourself: 'Well, that's alright then.'.
So congrats Jeff, your freakish knowledge of SQL is greatly appreciated 🙂