The Start menu was one of the key UI components that really helped Windows 95 take off. It's hard to imagine Windows ever being so dominant on the desktop without it. And now they've absolutely pissed it all away.
It's one thing to ditch it and try something new in 8, that was bad enough. But to bring it back but completely fuck it up so that it fails to perform its main function - to provide access to all available apps, is just insane.