The funny thing is, Microsoft is doing great with their mid-level games, which is where Sony used to kick their ass. IP like Sea of Thieves, Ori, and Super Lucky all look like quality experiences. Phillip deserves praise for that.
It was blockbusters where Xbox used to hang its hat. However, that seems to be where they're struggling now, outside Forza. Halo and Gears no longer look like behemoths. They need new high-level IP.
Personally, I think Phillip should study the philosophy of Sony a bit, especially the way they're willing to try new IP even if it means moving away from older IP that has a large following. You can't milk the same cow forever or you'll be in a bind when it dries up.
Then again, maybe they thought Quantum Break was going to be their next clean-up hitter.
Regardless, as far as Phillip taking criticism, it must be remembered that he was head of first party development at Xbox before moving to his current position. One way or the other, much of the responsibility for the games they have right now belongs to him and there have been several negatives that go along with the positives.
