CS started as a major for "computer nerds" who were very into computers. Computers were a hobby for virtually every one of my CS classmates in the 90's. Studying computer science was an extension of that interest, so majoring in CS made sense.

Fast forward a decade or two, and it is like you said, people who don't have a strong interest in computers starting taking CS as a major as a path to jobs and income.

Now, as a manager of engineering teams, I'm constantly surprised by Software Engineers that don't even own their own computers and/or have very little knowledge about how they work.