The fact that something is a joke doesn't automatically exempt it from criticism. If a joke is making a point, it still needs to make the point well. Even if a joke is just meant to be funny, it still needs to, you know, be funny.

This "satire" is merely stating his point backwards, not cleverly exposing hidden flaws in an idea. Nobody touts the inconsistency of PHP's standard library as a strength of the language. Not many people even claim that PHP is better than Ruby. The positions he purports to make fun of aren't real. He's beating a dead unicorn.