He said this during a podcast he does
there are a lot of people out there in studio leadership within xbox who absolutely detest game pass and think it has destroyed the value of their games, think it has taken away the value from all games in general and has been a detriment to the games industry in those people's view, because of how it devalues games
He also thinks they will eventually move away from day 1 gamepass for their own games especially since they seem to be doubling down on making games exclusive again.