I disagree. It's impossible to tell from a screenshot how long something took.
I could easily recreate that screenshot in a couple hours in photoshop - but that doesn't mean it TOOK a couple hours in photoshop.
The majority of design is thinking through how the app will be used, researching similar apps, figuring out intended user goals, etc etc. Then theres a long process of experimentation until you get to a point where you're comfortable to send it to the client.
Looking at that design makes me think the designer is fresh out of school. Lack of a real understanding for client management and asking the client real hard questions about strategy and long term goals. A bunch of whiners, get over it learn to handle your clients better.
I could easily recreate that screenshot in a couple hours in photoshop - but that doesn't mean it TOOK a couple hours in photoshop.
The majority of design is thinking through how the app will be used, researching similar apps, figuring out intended user goals, etc etc. Then theres a long process of experimentation until you get to a point where you're comfortable to send it to the client.