niche and egghead languages aren't how the world at large does things. Of those languages in summary, Java is used. Perl used to be but Larry has been doing wonderful job of letting it die and few would choose that for new infrastructure. the rest are fads
No, no, and no.
Computer science is no more about computers than astronomy is about telescopes.
— Edsger W. Dijkstra
I've never 100% agreed with this quote. A big chunk of computer science is about building better telescopes; and so it is with astronomy, too, that a not-insignificant part involves building better computers.
However, the real currency of the world is ideas.
Innovative computer languages express ideas about how the discipline of programming might be made better. People who study computer languages do so to prioritise ideas over mere skills, not without good motivation.
There is nothing quite so useless, as doing with great efficiency, something that should not be done at all.
— Peter Drucker
This sentiment motivated one of the all time best ideas in computer science.
The real hero of programming is the one who writes negative code.
— Douglas McIlroy
Unfortunately, we could have learned this lesson centuries sooner, but for some narcissistic revisionism.
If I have seen further, it is by standing on giant moraines of revolutions discarded.
— Isaac Newton (first draft)
If I have seen further, it is by standing on the boulders of giants.
— Isaac Newton (second draft)
Larry's glacial pace may yet reshape the landscape in a profound way. Perhaps Camelia is the moulder of giants. Time will tell.