MOR, we do operate the Dash head to head with Easyjet/Baby etc from time to time. It works. Big deal.
As to the thing being made out of paper or whatever you called it. Yeah it is. Big deal. All new aircraft are like this now. The Airbus has always been said to have less build to it than a Boeing. And I know engineers that convert Boeings to freighters say that the newer Boeings say the 757 onwards aren't built like they used to be! The Embraer has a reputation too I believe. So as much as I agree with you that its not a nice thing to put up with, its a fact of life now. There are few aircraft I fly in now that I can honestly say I feel truly safe in. The 146 is one that I can as its from that era when they were made to last. I see your concerns but the Dash is like any other new commercial aircraft. Built on the cheap, with the aid of computer predictions on what can be got away with.
Hey ho. Life moves on............and the saga continues, now where's that handbag??!!