can see why you think that, I just don't agree.
I think he's trying to get across that there will be games that can take advantage of the power by using the pc builds (assets etc) of games.
pc builds have higher quality assets etc, but still essentially same game. Doesn't have to mean uwp games.
do wonder if xo and Scorpio will get the ability to run uwp games in future though, and the implications of that.
I believe this is the end-game for MS. They are going to use their experience putting PC games on the UWP platform to identify how that platform needs to develop going forward to make it suitable to eventually be the primary platform for Xbox games as well.