The page source appears to contain all the actual text within <p> tags, but structured in a completely illogical way. With JavaScript disabled, there are a bunch of shaded bars where the text should appear, which look like placeholders for something that hasn't loaded yet even though it was there from the beginning. The <p> tags don't even seem to show up in the DOM. (I didn't check closely, but maybe they're embedded in an inline script.)

This is actively user-hostile. The site is going out of its way to interfere with the most basic possible function of HTML, i.e., the presentation of minimally marked-up plain text. The needless complexity is especially ironic in the context of an article about compression.