It is an incredibly modern advent this idea that you can never actually use the entire screen to render text for anyone except for mobile viewers.

If you cannot read across your screen, you are probably sitting too close to it. I'd rather have wider text that I have to turn my eyes slightly to see all of then narrower text that requires active scrolling.

And I don't know of a single OS that you cannot snap your browser window to half the width of your monitor on the edge, which would make this as presentable as anyone in this comment section wants without the site maintainer having to assume everyone wants narrow text.