You know what worries me most as far as learning all of this?

Question

You're...almost....
THERE! Done! After [insert what applies: weeks, months, years] of hard work, finally done!
So what is next? «snap fingers» Right! A job! So you search, do up your resumé, don't forget your cover letter! Okay.
Fast forward: Job Interview: You proudly hand over Resumé, Cover Letter, Certifications, Diplomas, etc. "Yeah! This is how hard I work," thinking to yourself. The Interviewer(s) look up to say,
"That was great...2 years ago. Now we need HTML-7, CSS-5, Angular, SQL, ABC, EFG, etc."

Answer 1

I am really sure that the software does not get old as fast as the hardware. Too much legacy and solution-dependent systems to "switch to 2.0" (3.0, 4.0, and so on..) in a snap.

Most often the companies are the very last to actually make an upgrade. If it works, don't touch it :)

The upgrade process is usually veeery gradual and laggy. And unless the new version promises to give you a market advantage overnight, people won't do it hastily...

Answer 2

I programmed C++ for 33 years never using a recognized standard version. It was all done with an early 90's compiler. Companies do not mess with what works. Getting a new version of a compiler and performing a full test cycle on a multi-million line system is way too expensive to risk.