Not nearly as disappointing as the fact that Webkit has not become a standard in all browsers. We should all be working on a single rendering engine. Webkit has won, and should be the standard.
People/organizations can continue to experiment on components of that. V8 vs Nitro etc... We'll just have beta/dev forks of Webkit that can eventually be merged back into the core.
Browser fragmentation is fine. It's the rendering engines that are killing us.