Thinking about it, I have to give the fans some credit. The delay wouldn't be annoying if they didn't have a set date prior to it.
If Nintendo and Sakurai expected the game to be delayed multiple times, they could've just given Brawl a vague placeholder date and announce the date when they were SURE it was done.
Hell, most publishers do that already! They don't announce a date till they know its ready. So if it was delayed, it wouldn't be annoying since it didn't have a set date to begin with.
It would be like the girlfriend or boyfriend who promises you to go out on a date on Friday and after waiting all night he or she calls to tell you that something happened and couldn't make it.
Eventually, the person gets annoyed, no matter how big their patience is.
So if Brawl gets delayed AGAIN it would be annoying fans even further.