The point is that "he did a phenomenal job early in his career" rather misses that his early career is more "incredibly mixed bag containing disastrous missteps" than universally "phenomenal".
No, I don't think that at all. Clearly. The Windows mandate was a colossal, world-historic fuckup that I think is indicative of his impulsiveness and representative of his capacity for making very very poorly thought through, Company-destroying decisions.