Ehh, pretty silly article. It's essentially just taking an old story (release of HipHop) and modifying the context to (barely) fit with current Facebook press.
I think they did a pretty good job of explaining how things work, though. They didn't make outrageous claims and they kept a sense of perspective - they emphasized the application-specific nature of things.
I especially liked the sentence "But since C++ is rawer, in a sense--closer to those ones and zeroes that computers ultimately run on--it means there is less digestion, so to speak, involved."