Reading between the lines here - for him to be fired, it must indicate that signs are pointing that Win 8 will be a dud release, similar to Vista. Sigh.
Vista wasn't a dud. It was mostly seen as a failure because a lot of incompatible software (mainly POORLY written software, but MS is probably partly to blame for that), and a few UX changes that forced to people to be a little more responsible (UAC).