I call bullshit. There's no reason Google can't update everything AOSP-y in /system - libc, libart, libwebkit etc.
> Google (and Apple and Microsoft) can totally do it for devices that manufactures and maintains on its own
That's a low bar. When you buy a Dell laptop, you continue to receive updates from Microsoft. This is the bar we should hold Google to.
As for the certification process, surely having one update that ships to N models is easier to test than N updates shipping to N models?