There's no point for Apple to self sabotage like that. Why make your new shiny $1500 phone look bad just to praise a discontinued products? Switching back to Lightning is impossible. Better to just move on with it and because it's Apple, they will more likely to pull some bullshit like "Reinventing USB-C" or "The Best USB-C in the world".
Apple would rather just ditch all physical ports and move to 100% wireless than praising Lightning over USB-C.