This article seems terrible and confused and thinks it makes a point about terms by clearly not understanding the point of any of them. I'm pretty sure the author has never read a word Richard Stallman wrote.
I posted the article for a good debate, which I seem to succeed. Though I'm not the author and we don't share positions, I've never read an article by RMS either, only about him, and attended a lecture by him. So please, recommend a good article by Richard, which relates to this article!