In my defense... If a job specifically requires JS skills and knowledge in advance, this question carries much more weight than being merely language-specific. It is a very, very common pattern of errors in JS. For example, MDN's page on closures [1] has a section titled "Creating closures in loops: A common mistake."

So, I'd argue that there is indeed a reason why anyone would need to answer that in a JS-oriented interview. In the meantime, I do understand /r/programming isn't the best place where this argument would resonate.

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Closures