I’m not criticising the author or anyone who came before. I’m trying to understand the impetus between redoing a joke that isn’t yours. You don’t learn anything new by redoing the exact same gag that you wouldn’t learn by being even slightly original or making the project truly useful.

Ideas are a dime a dozen. You could make e.g. a Fonzie URL shortener (different lengths of “ayyyyy”), or an interstellar one (each is the name of a space object), or a binary one (all ones and zeroes)… Each of those would take about the same effort and teach you the same, but they’re also different enough they would make some people remember them, maybe even look at the author and their other projects, instead of just “oh, another one of these, close”.