Less-powerful console does not edge out the Xbox Series X for most games. That's why there are threads about certain titles when it happens, because it's expected not to happen at all, those threads are testimate to how unusual it is.
You have working eyes, most games are better on X. Even a simple search shows that. That's why each time there's a thread on the opposite its a spectacle.
Except that theory is silly, and another executive from Xbox, thread was made here, directly said there would not be enough supply to meet demand because they couldn't get the production needed.
Also to believe this theory would require someone insane to also believe that Phil thought the S was going to outsell the PS5 or be close, which is not how this gen has operated at all, and would be an abrupt change in strategy out of nowhere.
Simply the answer is they have supply issues, and there are many articles coming out even just today there is a thread with poor Xbox sales estimates that also still note supply issues for the X. Everyone knows that the X has supply issues accept people who want to pretend Xbox is falling apart.