Lots of pages, news-sites in particular, use JS to load more bloat, animated slide-decks and lots of things causing slower loads, including "beacons", and lots of fancy/noisy UI-elements distracting from what you actually came for: the nice, static HTML content that was the news.

You will be shocked to see most pages on the internet load almost instantly the second you disable JS instead of spending several seconds loading all sorts of non-content.

The performance gain of disabling JS is immense.