Indeed, I'm not sure how people can use Tailwind or Css-in-JS without, well, knowing CSS. It's literally CSS as another DSL.

Point being that traditional stylesheet based CSS is all but obsolete now. Any dev can pick one of ten thousand component libraries, slap a few utility classes on the element, and call it good enough.

Not when you're working at a company that wants a specific design. Tailwind and CSS-in-JS have their own issues.