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 searching data tables with JS off, and let's try making ajax requests to load data over time instead all at once. It's not only in your browser it's in your phones, in apps that provide you services you can't live without.
These type of articles are a shame and are only written to instigate fights among developers. The world is using JS, it's on every major app. Get over it or make something better.
I know a guy who built a single-page web app for a blog. Really.
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 know a guy that made a model ship in his spare time. It doesn't carry any passengers or cargo, doesn't meet even the most basic safety standards, and frankly doesn't do anything you couldn't do with a canoe.
I bet it looks pretty good on his mantelpiece.
There comes a point where you have to ask yourself - does it matter that he built (what I assume is a personal) blog in framework du jour, simply he just wanted to?
The whole point of the article is that not everybody is able to use javascript, for a variety of reasons, and it makes perfect sense for apps to provide as close to equivalent functionality as is practicable.
These type of articles are a shame and are only written to instigate fights among developers. The world is using JS, it's on every major app. Get over it or make something better.