This shows clearly that Facebook doesn't get mobile development. They are trying to shift the blame for poor application performance from themselves to the make

This shows clearly that Facebook doesn't get mobile development. They are trying to shift the blame for poor application performance from themselves to the makers of mobile browsers. The point is that users don't care where the blame is, they just see poor performance. The sensible thing for them to do is to recognize that user experience is the most important thing and use the best vehicle to solve that problem, be it a very thin html5 client or a fully native app.