Steve Bennett wrote:
And the worst is "come back later, might support you then". Not because the candidate is in any way actually deficient as an admin, but they simply haven't served an unwritten waiting period.
However irritating this might seem to the person who is told that, this can in fact be quite reasonable advice. The subtext is often "We don't know enough about you to tell if you'd be a good admin. If you're still interested and haven't gone off the deep end in the meanwhile, try again in a few months." Or simply "I don't think you're experienced enough yet. Try again when you've been around longer." Or possibly both.
People do change over time, and more importantly, people also reveal more about themselves as they interact with people. _I_ know I was as trustworthy back when I registered my account as when my RfA was passed, but for all anyone else knew back them, I could've been another WoW sock. The six months or so between the two events served not only to familiarize me with Wikipedia, but also to provide other users with some confidence that I wasn't going to go on a vandalism spree as soon as I got my admin buttons.