I think your point was valid before the release of Android 4.0 (ICS). It brought proper design guidelines and a common UI pattern for applications, and the experience now looks polished compared to 2.3 and below. What I love about it is that they don't enforce the rules as does Apple, they consider that if users don't like your UI or the user experience you propose, they will simply uninstall your app and you will be the loser, not the platform.

What you could blame ICS for was that the user interface was not always as smooth as it should have been, but JB has fixed the issue with Triple Buffering, and VSYNC (the famous project butter) and now Android just looks and feels great. Give it a try if you have the occasion.