True, however this is not a terribly helpful explanation because the AOA is the final result of everything that causes the air to flow over the wing.
That "everything" includes the effect of the propwash, which (for this aircraft type) would be flowing over the inboard portion of the wing. So I would expect a slightly lower stall speed if the engine power is higher, particularly as many wings are designed to stall inboard first (for aileron control reasons).
But it would not be a strong effect.