shifting was never purely rider powered, prior to wireless / electronic shifting it was mechanically powered, which is also "additive energy" as you put it. The rider just pushed a button. The rider is still just pushing a button with wireless / electronic shifting, so not much has changed in terms of rider input. I wouldn't consider this a form of E-bike because you're not really getting any more assist than you were before. What it does come down to is less set up for the bike builder or mechanic, thus another way the bike industry is putting your LBS...