PMs and UXers are the Tom Sayers of the software world, whitewashing aunt Polly’s fence and making the other kids do the work and pay for the privilege.

Google Web Toolkit was a thing at some point in time. ;y current company still maintains some apps which are written in it.

Java is not very much older than Javascript and at the time it was far from the world’s first programming language. It probably was measured by hype in developer circles the Rust of the mid-nineties.

Why is that?

Programmers are humans and that’s the way humans behave. You’ll find plenty of ego everywhere, you just selected yourself into our profession and probably don’t meet too many people on a different professional path.