Shorter Lethem: I read a Wikipedia article I dislike, and therefore I will urinate on the concept of Wikipedia.
I mean seriously, he's complaining about pedantry on Wikipedia. Which is an encyclopedia. What, I ask you, is the point of an Encyclopedia if it isn't pedantry? After all, pedantry is (according to Wikipedia):
a person who is overly concerned with formalism and precision, or who makes a show of their learning.
Yes! Wikipedia is not The Next Great American Novel, it's an encyclopedia. At times poorly written, at times with strange emphases, but it's a damn encyclopedia.
It's like complaining that your medical textbook isn't friendly enough. It's not supposed to be friendly. It's a medical textbook.