Plenty of web clients allow the user to turn off JavaScript. Which is a good safety and security measure.

If a web site breaks without JavaScript, that’s the fault of the web site designers and implementers.

I’d love to. Sadly, when I do leave JavaScript alone, too many web sites that should work fine just break.

Web applications need JavaScript.

Web sites do not; the static web technologies allow basically any styling, and browsing any content your browser can handle, and HTML forms work fine. In any case, many people who need to access the web site can’t run modern JavaScript. So it should work without that.

There may be special dynamic enhancements that require JavaScript, but the site should so its core job flawlessly, without any JavaScript.

Not just you. For more than a quarter century, we’ve known that if a paragraph’s text lines sprawl across a wide screen, it’s more difficult for most people to read. (And the same is true if the lines are too short. There’s an optimal range.)

https://jamesmattison.co.uk/method/why-line-length-matters-for-legibility/

For this reason, it’s good for a website’s style rules to limit how wide (measured in characters) a column of text can get, regardless of how much screen there is to expand into.

Answered in another reply.