Oh my lord, this article is non-sense. Had you gone to a website and had not been able to read anything I would say... good point. But you went to a Wordpress admin to prove your point. Lord have mercy... you're really going to hate your experience once WP switches to a JS based editor. Quick, let's try using Facebook and other apps built on JS frameworks and complain about the functionality not working. Let's try se…
It takes a few seconds to load the post titles, it'll make your computer grind to a halt if you have more than two tabs of it open, it took months to write, and it doesn't do anything you couldn't do with plain HTML and some AJAX request handlers... but Brawndo has electrolytes!
I bet it looks pretty good on his resume.