And they should. There's a big difference between two guys renting a house and living of their savings accounts pre-launch and 41 million dollars and 27 employees pre-launch.
Well for one, you shouldn't have issues like the app crashing when someone tries to take a photo. 27 employees means you have plenty of QA and a testing environment. Two guys in a house means you maybe have one iPhone version to test on and no time to do thorough QA.