That's not really what we were talking about here. The context was that compsci students want to learn marketable skills, and the claim was that if the student had learned Scheme in class, they could quickly pick up Python. And that's true,
for the language itself. But knowing only the language, like never importing code you hadn't written yourself, doesn't go far along the road to marketability.
I'm not arguing that compsci should be job training, not at all. My disagreement is solely with this specific claim.
But FWIW, while I understand your analogy, an astrophysics department that didn't tell the students that there are these things called telescopes, and here's why you might use one over the other for various situations, and that they're how you're going to get the observation data you'll test your theories against, would be doing a disservice.