In the 90s I used the word to describe an instant messenger version of "phone sex" and I haven't been able to take anyone that uses the term seriously after that, but I never really took the goverment or academia seriously to begin with.
Language fires the imagination. This is mostly a good thing. Sometimes it's also stupid, but not necessarily bad for it.
“Information security” is too broad as it covers more than technological systems—sensitive information often exists on paper, for example.
A close plain English name would probably be something like “information systems security” and I have heard some people use that, but it’s kind of a mouthful.
I guess I wonder why people get so upset and offended by the word cyber. Sure it’s a made up word, but all words are made up. IMO a lot of the resistance to using it comes down to weird cultural signaling like “I’m too smart or informed to use this dumb word.” It’s just a word, and even people who complain about it know what it means.
While I absolutely agree that it's a pointless discussion, I don't believe it's completely insignificant.
This is where 'cyber' comes from. It's not "stupid".
Think of it like front end web development in the 90s. Webmasters ended up with a lot of independence and cash, because the company had to get on the information superhighway.