To expand a bit, there's no way to build something on the web without HTML—even if that HTML is written via JavaScript.
Similarly, there's no (reasonable) way to adjust the appearance of that HTML without CSS—even if that CSS is written via JavaScript.
These days, HTML and CSS can handle massive amounts of things that used to require JavaScript.
So if JavaScript is the least critical and least reliable part of the stack, we should all strive to use it less rather than more.