Irrelevant, you're skipping the complete dismantling of first party studios for some personal gripes that happened before. Or bad selling personal favorites that wouldn't have mattered in a business sense.
Microsoft has increased their gameoutput considerably, they had new studios formed, and were ready for next gen and all of that was shuttered to where they had nothing for next gen and then sat tweedling their thumbs until they got approval for the quick solution of buying studios.
Yet it was all on Phil, anything else is either just you being delusional or refusing to admit what happened. Other than the downgrade of Halo from 2014-2021 we had Sea of Thieves and a bunch of duds for major new releases. Horizon has been upgrades to the same game and Gears 4 and Gear 5 were safe bets.
Then in 2021 we get Flight Simulator on consoles, Halo Infinite, and another Horizon game for first party exclusives.
it took until 2023 to release two new big IP and one of those releases was a dud. The last nearly 10 years can all only fall on ONE person. More than enough time to correct or change strategies as we've seen with Nintendo and Sony TWICE in that time. But Xbox never did so.