I literally said that they may not read Wallerstein. The point is that the broad strokes are not contradictory to the concept of an imperial core existing. I was looking for ideas that actually materially contradict here. Honestly, i dont think you need to follow all of Wallerstein to use the term imperial core. If its useful for describing the current geopolitical situation, which i think it is, then its useful.
Honestly this all just seems like a nitpick to throw me off base. None of it contradicts my core points.