At least with the AMD bug you were able to fix it and then release it as soon as you had the solution.
I think you are missing the point. For 9 months we were completely hosed on this problem, and I did not believe we would ever fix it because AMD were impossible to reach and absolutely no help at all. We fixed it by the good fortune of having someone randomly pass by with a way to work around the driver bug, hardly a process that can be relied upon. That is nowhere near us being responsible for the technology and being able to resolve issues independently, even when working with native tech. Google by comparison are amazingly reachable and it's possible to communicate directly with engineers working on the relevant components, and updates go out every 6 weeks (which is a double edged sword, but compare that to driver updates that effectively never happen for anything not currently on sale).
szymek - we do support Ludei's Webviews. Last I heard, Canvas+ still had memory management problems, which was the #1 complaint, and still has a long list of features not supported (Web Audio, WebRTC, XML parsing...) that lots of users want. Even if you can get by without them, a lot of other users need that, and only the webviews can provide it.