Comment by cogman10

I generally agree with you, but it does entirely depend on the type of application you want to make.

If you need a lot of graphical elements and customization to get a look and feel that matches what you want, then yeah, nothing really beats html/css/js for both it's flexibility and available ecosystem.

But if what you need is an application with a button that does magic things when you push it, or a text box or table that allows for customization of the text color, then all the other types of UX frameworks work just fine. You just can't expect to do something like make a pretty chart.