In other words, fictional stories are about remarkable, imaginary people doing remarkable, imaginary thing. Seems dangerous. Let's only read and/or watch stories about reality. That sounds fun (for reference, read Joseph Heller's Something Happened; the prose are amazing, but the story is unreadably bad precisely because it's about ordinary people doing ordinary things).
I agree that the author of this particular article is pretty extreme in his immediate condemnation of any and all stories that feature a remarkable protagonist, but I do think that there is a point to be made about how unrealistic expectations of romance are hurting everybody, and how early on those expectations are ingrained.
I always felt like the Rabiit series from John Updike was sort of like that. Certain of the books were far too ordinary but at least they had affairs and such to keep you interested, but nothing too out of the ordinary. You ever read them?