Well, the real problem is that "right" is a very broadly-defined term that sometimes refers to is and sometimes refers to ought. I was operating on the definition (which I think is more useful) that a "right" is something a person (or corporation) deserves regardless of whether they're actually given it, so it's appropriate for me to answer with ought.

Oh, and I forgot to add: did you read the article you linked? The is-ought problem is when someone confuses the two, which I clearly did not do.