Once we funded someone who reminded me of Zuckerberg, and even then it was far from the only reason. And the fact that the YC partners have taunted me about it ever since shows that if anything we're probably extra skeptical about Zuckomorphs.
I realize it's possible to be unconsciously influenced by applicants' appearance and manner, but can anyone at this point believe we're not aware of that danger, and simply pick people based on matching some crude archetype? That we could remain that naively incompetent after 16 cycles of picking founders and then watching how they do?