Is the critique that they are using PHP or that they aren't using some kind of extensionless routing?
Either way it's silly to use superficial factors like that to judge large websites. Given the performance profile, data interconnectedness, complex public API, and interface richness of Facebook, the rate at which they push changes (small changes daily, weekly major pushes) and advance the product is astonishing.
Either way it's silly to use superficial factors like that to judge large websites. Given the performance profile, data interconnectedness, complex public API, and interface richness of Facebook, the rate at which they push changes (small changes daily, weekly major pushes) and advance the product is astonishing.