1. Commercial waste management is different from residential waste management.
2. By removing nonrecyclable plastic straws, Starbucks removed a source of contamination for their plastic recyclables. Thus, the percentage of their plastic that is recycled would have gone up even more under the assumption that their commercial waste management company wasn't already filtering out straws.
This is no small error. The author should have known to delve into this more because increasing recyclability was the whole reason Starbucks removed straws with a big hullabaloo.
This is par for the course for the poorly named "Reason," which pushes a wishful thinking philosophy that unregulated markets solve all problems. https://reason.com/blog/2016/11/18/is-climate-change-already...
Instead of ditching the straw, they should switch to a cardboard straw that is biodegradable.
In either case, the article's throwaway dismissal of the whole reason Starbucks removed disposable straws to begin with is lazy and misleading. A correct analysis would thoroughly analyze the recycling end.
Coincidentally I think the last time I used a cardboard straw was at the Mumbai airport Starbucks. Maybe that was a test site for doing what you suggest.