Not really, it'd be more impressive if they waited an extra month, then did what they normally do, but with decent stock levels (ignoring any faked supply issues for publicity/hype).
Shipping some phones around isn't really impressive IMO, although compared to Google they're like ****ing magicians.
I guess so. But they've certainly nailed it compared to their rivals. You mention Google- say no more. HTC- can't confirm actual release date or quality control/firmware variations by the looks of it. Nokia- 'launch' the 920 with no launch date, availability or price :-/. We'll wait and see how Samsung handle this launch.
The other advantage Apple have is that while they of course do supply the networks and P4U, CPW at launch too, you can just walk (read: queue) into one of their stores and pick one up, or order directly online so easily.
Even if supply is backed up, they will say 'estimated delivery 2-3 weeks' or something. Unlike HTC, all it says on it's website right now for pre-orders for the One is a straight 'currently out of stock'. Well so much for attempting to satisfy demand huh. It's little differences like this.