Wouldn't it be more noteworthy if we weren't able to find one analyst who predicted Lin? With the number of amateur analysts, and the number of players, you'd think that its likely there's a web page somewhere plugging every prospect.
In a scam, you don't have any way of making any future correct predictions--it's just random. This analyst has a reasoned system that can be tested against past players and against future prospects. Sure, there's going to be someone out there that picks Jeremy Lin. But the trick is, can you correctly identify players who are already known to be good based on their college stats, make the right call on Jeremy Lin, and go forward and continue to make good calls on draft prospects?
I'm not saying this sabermetrician generally makes good calls; I haven't looked. But dismissing his call as the result of a series of Bernoulli trials is completely missing the point.
PS: It does not matter if there is a system behind their predictions, what matters is how well their predictions hold up over time. Otherwise your just: http://xkcd.com/904/
Ironic side note - I tried to use it as my ESPN.com forum account avatar, and was denied.