I don't understand why people expected so much from Gingerbread in the first place. So they expect Google to only release updates with massive feature additions? Personally I would rather have small incremental updates than nothing at all.
Integrating a new release, testing and verifying correct operation of a cell phone is a long and costly procedure. This is why many phones still don't have an update for 2.2.
So cell phone makes would prever big upgrades with many new features -- but release infrequently.
The "release early, release often" mantra just doesn't suit this type of market.
Feature-set was never a problem for Android. The UI didn't get an overhaul though, just nips and tucks, and is the only quarrel in that post. Personally I like the Android UI specially after the black/green/orange refinements in 2.3.