If I thought so, then I wouldn't have posted it, eh? :-) My point was to show a real-life example showing how much the system can screw up when everybody operates on a hair trigger; delays of a few days are a chance to correct errors instead of compounding them. Note that some people (Matthew Woodcroft most recently) are also proposing entirely scrubbing revisions that are deemed copyvios, which would make images unrecoverable.
Your example does indeed show that it's a good thing to wait before deleting, but only because it's difficult to undelete. It is now easy to undelete, so your example is irrelevant. I know you think otherwise - that doesn't make you right.