I know this is a little outside the normal scope of this community. However, I think it’s undeniable that a contributing factor to the ideas and behavior of contemporary tech oligarchs is their love of older sci-fi and fantasy literature. Seeing the authoritarian and sometimes even straightforwardly fascist ideals hidden in those works can be helpful in understanding how these people think.
I think Moorcock does recognize the value of having empires in fiction, his point is more about the underlying philosophy revealed by the protagonist(s).