I did notice the intern thing. I had the same thought and almost mentioned it.
But I also remember what it was like to be an intern at a media outlet ... and I was a darn good one, too, ha! You couldn't tell the difference between what I wrote and what the paid staffers were cranking out -- well, most of the time.
Sad but true fact about journalism these days: Interns are writing A LOT of stuff because interns come cheaper (often for free) than full-time writers. The industry is in dire straits, so the decision-makers are cutting costs wherever they can. Perhaps one of the great ironies of the field is that it's a lot easier to get an internship in journalism than it is to get a job.
Nonetheless, the writer -- intern or not -- should have been more mindful of the singular tone and tried to find another source to quote who had a different view.