If you're asking me if I understand why people keep whining about their FPS in Crysis, then no, I don't understand it.
Look at the game. Graphically it is leagues ahead of anything else released. This is the main reason why FPS is so poor on high settings. Are there any other popular games out which seriously stress the 8800 series? Crytek are pushing things forward. Yes, Crysis is flawed, but what incentive would there be for nVidia to develop the 9-series if the 8-series could play every game on the market maxed? Nobody would buy it.
Crysis is flawed because it's ground-breaking. It's games like Crysis which push the industry forward. nVidia have released more drivers since Crysis came out than they did in the previous six months. For us, as technology enthusiasts, one game like Crysis is better than five games based on the same UT3 engine, etc.