From a "devil's advocate" perspective, it's a relatively simple way to keep people from burning through the rate limit by submitting loads of usernames. Of cour

From a "devil's advocate" perspective, it's a relatively simple way to keep people from burning through the rate limit by submitting loads of usernames. Of course, if checking whether a user has starred the repo counts towards the limit, it doesn't solve the problem entirely... I used it and immediately unstarred.