Using the stock market as a judge is tricky. I agree that the price of AAPL is a poor indicator of how their products will perform in the market is folly. However, Steve Ballmer not moving MSFT in ten years really was a problem.
It is not unprecedented for Apple to release what appears to be an incremental revision of a product (or even a "worse" one) to great commercial success, and that is probably what will happen with the 5C. This tends to happen when the product in question is not "for" the pundit class, who in their write-ups see the product's value proposition differently than the people who end up buying it in droves. To put it diplomatically.
I guess what I'm saying is, if you've been around long enough, you have seen many people portend Apple's doom. Sometimes they even have arguments that make a lot of sense, which is nice. But you learn to ignore it, because none of it has come true so far.