> Having separation between the HTML on the server side and the JS on the frontend side is exactly why React become popular.

But did they really. Cuz now i see .jsx files with sql calls, adding in static js and css, and logic with mixed html in... Its honestly blowing my mind how we got to this point.

We all agreed biz logic, and view should be separated. and that html, css, js should also be in sperate files. and then .jsx or the like came along and merged them all back together in some of the ugliest code ive seen in years.