Do web developers use tools like Jade/Pug rather than code in raw HTML?

Please someone tell me whether do web developers use tools like Jade/Pug rather than code in raw HTML or not.

Developers have started injecting both the CSS and HTML into JavaScript.

why?

Because JS is more powerful, due to this it has now become possible for developers to make heavy content loaded websites without having to suffer efficiency of the website.

The files are transpiled with the use of tools like Webpack to compress the bundle size. You can use pug.js for the same.