Yeah, if just full-screen Java Applets had prevailed instead of web pages we would be much better off! Seriously, the html/css/js stack has its share of haphazard design, but it has shown to be much more robust and adaptable than any of the proposed "better-designed" alternatives.
If it is such a problem for you, I would suggest coming up with actual solutions instead of the Grandpa Doom visionary "prediction" you've offered which is of no value.
What exactly is not useful about using HTML and CSS to create web pages? The entire medium of the web to create applications is already far beyond the original intended design of the browser, etc. So what makes it so bad besides that some people, who seem to think they're pretty smart, have a lot of difficulty with it?