Look at how different UI is from mainframe/green screens to the client-server apps of the 90s-00s to todays mainly web front ends. It has changed drastically over the past 40 years but still pretty much does the same thing. Provides the user a way to interact with computer/software/data.
Considering the fact that these are the de-facto UI languages for the World's most widely deployed platform (web browsers), do you think that javascript / html / css are going anywhere anytime soon?
1994 you: Considering the fact that these are the de-facto UI languages for the World's most widely deployed platform (Windows), do you think that the Win16 API is anywhere anytime soon?