I made a reasoned post, I can't account for you failing to comprehend it. Who indeed does Foden play ahead of? Maybe David Silva but in the overall pecking order, he falls behind David in terms of XI. To be rotated, you'd have to earn that spot in the selection process - if Foden hasn't moved into it, for whatever reasons, the 19 y.o. isn't ready yet. It's hardly the end of the world or some indictment of failing to develop
No one in decades has brought more youth along to senior football in Europe than Guardiola, if he isn't doing it well enough for you then you'll never be satisfied