In objective terms, sure the update isn't going to change anyone's life. But you're repeating what people were saying back in late August when Amber started getting released on many other carriers around the world. People are rightfully annoyed by what this represents.
I don't know what fluke led to AT&T releasing GDR1 so early. At the time they probably wanted to give Microsoft and Nokia the perception that they were in fact a premier partner. It was certainly helped by the fact that there was no major launch of an iPhone looming. The company is clearly far more invested in Apple than it is in Windows Phone. But who can blame them? iPhones have considerable profit margins, especially a year on when they continue to sell. The iPhone 5c must be incredible; a year-old iPhone 5 that's even cheaper to manufacture. That's how Apple has the freedom of custom implementations like the fingerprint scanner. Like a luxury brand, they enjoy a lot of extra profit that can be dumped directly into design. Furthermore, statistics show that iPhone users generally spend more post-purchase than buyers of other smartphones.
This is why Apple has so much clout; why they can get their way with AT&T. Microsoft has no such pull and the Amber situation is a reminder of that. But then, it would be nice if AT&T actually cared about their consumers instead of constantly trying to get them to jump to the next new device. And that's the other problem here; the inescapable feeling that for AT&T the Lumia 920 is obsolete and we should all be craving the Lumia 925/1020, or better still, the iPhone 5s/5c.
And of course, the whole point of a discussion forum like this is to vent.