No, but I don't think that's a fair analogy. The fair analogy here is: should you consider learning how a food gets bad? Yes. Should eating it be (very) discouraged? Also yes.

Oh damn, it is quite similar indeed. What's your recommendation of what I should proceed in this situation?

I agree with you! I don't believe at all this usage of Javascript is a good usage of the language. Having said that, I don't think just because an idea is bad that it's not worthing understanding and learning about it.

Given that, do you think this is a "completely lost" exercise or can we make it better? I'd love to hear and incorporate feedback on this kata.