More because it's easy to poke fun at Haskell in this way, even the Haskell people know they come off as obtuse and academic. AFAIK there's been much soul-searching in their community about how to get past that.

While Steve Yegge is a good satirist, I see this post as an extended version of this joke from the "Mostly Wrong History of Programming Languages":

Haskell gets some resistance due to the complexity of using monads to control side effects. Wadler tries to appease critics by explaining that "a monad is a monoid in the category of endofunctors, what's the problem?"