Here's the thing, as a Catholic I totally get how people can take what I do/say/believe and twist into a half truth or a full-on lie. I've seen people leave the Roman Catholic Church because they read the book Holy Ground: Walking with Jesus as a Former Catholic. The book is a joke - the author, Christ Castaldo, readily admits that he was raised in a nominally Catholic home, barely going to Sunday Mass, that that they stopped attending all together by the time he was a teen. He claims to be an authority on the faith even though he was obviously barely catechized and reading through the book he clearly understands very little about what the Church actually teaches. I know second graders preparing for their First Holy Communion who could better explain what the Catholic Church actually teaches than Castaldo does. Over and over again he takes his poor understanding of Scripture, Church history, and Church teachings and misrepresents them as he portrays himself as an authority.
It's sad to see that people have abandoned the faith they were baptized into and raised in because they read Castaldo's and other, similar books. Instead of going to actual sources - like a parish priest, the Catechism of the Catholic Church, or books and websites written by people who claim to be faithful to the teachings of the Roman Catholic Church - they did incredibly poor research and relied on pathetic sources. If their faith journey were a research paper they would fail for using such pathetic resources.
So what does all this have to do with Starbucks? Well, the CEO didn't actually say what people are saying he said. What he actually said was:
I know there a many people who try not to patronize companies that support beliefs that are contrary to their own. No Disney, no Girl Scouts, no Oreos, no Susan G. Komen, no Starbucks. Personally I support some of them and some of them I intentionally do not support. It all comes down to doing your research, finding the truth (because the media probably won't give it you and you'll have to check multiple sources and wade through the spin), and considering how what you've learned impacts your convictions.
Don't leave the Church because you read a stupid Jack Chick tract and don't stop buying Starbucks only because someone tells you that its CEO doesn't want your business because you support traditional marriage.
You can read more about the Starbucks CEO's comments here or here.