This is about as biased reporting as you can get. Not that I am a defender of fast food, nor am I saying issues like this don't happen. They certainly do. But you can just as easily go to a more upscale restaurant and get the same sort of issues. My friend that worked at a Red Lobster tells of various sanitation issues like shrimp falling on a filthy floor and the supervisor telling him to pick it back up and serve it (He quit his job because this kind of stuff). I have personally got food poisoning at a very expensive steak house. I also got a free meal once in an upscale restaurant when I complained of the broken glass buried in the food they served.
Anytime you have someone else prepare your food, regardless of the name on the store front, you are putting your trust in people you don't know who may or may not be trustworthy. You can bet that Starbucks chain's upper management have food safety as a priority. It is sort of like the right wingers claim; "It isn't the gun that kills, it is the person holding the gun." In this case, "It isn't the chain store, it is the people who are work there."
I personally never go to Starbucks, but it sure isn't because I consider their food safety any better or worse than anyone else's.
