No, he's a VC. He's done a great job of promoting himself and his company through helpful blogging and twittering but he's not the one and only authority that we need to hear from and especially not about US presidential politics.
but he's not the one and only authority that we need to hear from
He's certainly not the only authority (who said he was?). However, he certainly is one authority whose opinion I am interested in if the community so decides.
Trouble is, there's hundreds or thousands of interesting people out there whose opinions on other matters would be interesting on this site. VCs, entrepreneurs, programmers, scientists, mathematicians, writers, et cetera. No doubt, every one of them has an opinion on politics. But I don't want to have to wade through them all.
What's Robert Scoble's opinion? What's Sergey Brin's opinion? What's Don Knuth's opinion? What's that xkcd guy's opinion? What's Paul Graham's opinion? What's that bald marketing guy whose name escapes me for the moment's opinion? What about Joel Spolsky? Or the auctomatic guys? Or the guy who wrote Python? Or the guy who wrote Rails? Or ... well, you get the idea.
I don't care about any of their opinions, and neither should you.
Ah, I meant to say that he's the most important VC in NY, and so has more authority than just "a VC"... but these are just semantic details of a meta-argument, no?