Hemingway's writing is incredible, IMO. And the theoretical reasons he had for writing in that style are very convincing. However it leaves one massive problem

Hemingway's writing is incredible, IMO. And the theoretical reasons he had for writing in that style are very convincing. However it leaves one massive problem. If this is the 'one true way' or writing fiction, so to speak, then nobody else can really embrace it because they'll be dismissed as Hemingway wannabes.