I think it may have something to do with him being Editor-in-Chief of anything related to gaming, and not being familiar with the isometric camera angle. As a former Editor-in-Chief, I can't help at wonder as to how he got the job.
But still, he makes a few good points. I would be curious as how the Diablo world would feel made into a first person immersive experience, like Vampire TM Bloodlines, or Deus Ex, or even the classic Ultima Underworld. Games he doesn't actually mention, which he would if he actually meant to suggest that kind of first person experience, and not just a first person camera.
A part of the article is just intentional flamebait, like the part with the Diablo games not having any difficulty, that's just wrong. D2 on hell will bloody murder you every chance it gets. When I first played it, I found it difficult even on normal. The first fight against Diablo was brutal.
He does however point out that the isometric view makes the game stand out, something that a first person camera wouldn't, and that it's a great experience.
If their intention was to get hits regardless, and it certainly was, than the article is perfect. Who cares that people like me used to spend weeks researching and coming up with ideas of engaging articles, when I could just write "Why isn't Homerworld a cover based console shooter?", and get more hits than I could ever dream of.
That reminds me, look out for my new series of "Why isn't your favorite childhood game being turned into something that's a betrayal of everything it was, and how can we make it happen today."