If it was something like a language theory class, that's perfectly valid. Honestly, university should be teaching heavily about various language paradigms and less about specific languages. Learning languages is easy if you know a similar language already. And you will always have to do it. For my past jobs, I've had to learn Scala, C#, Go, and several domain specific or niche languages. All of them were easy to learn because my university taught my the general concepts and similar languages.

The most debatable language I ever learned in university was Prolog. For so long, I questioned if I would ever have a practical usage for that, but then I actually did, because I had to use Rego for my work (which is more similar to prolog than any other language I know).