It may have 0 environmental impact, but at least it's a step in the right direction for reversing our 'disposable society'. Really, though, if you're that concerned about the environment and you JUST HAVE TO HAVE STARBUCKS... bring your own re-usable mug. That's a thing, too.
Also, the paper straw claim is pretty dubious. The nearest pizza place to my office has been using paper straws for months. Never had one "collapse" mid drink, even after an hour or more. The author is resorting the the pseudo-journalistic "people are saying" technique to make a BS argument. I'm a person, and I'm saying paper straws are just fine! Why not "quote" me in the article?!?