Yes, but we're discussing technology that will also be rare. It's not like these chainless electric drive systems will appear on big-box sporting goods store bicycles, so why compare it to a mass-market affordable bike's technology?

I think it's reasonable to compare a leading edge technology to a leading-edge existing product. Otherwise, it's like it's 2007 and we're complaining that this newfangled iPhone thngie can run out of battery in a day, while my POTS telephone works even in a blackout.

Yes, true, but apples, oranges.

Not necessarily. Shimano Di2 electronic shifting was introduced all the way back in 2001 and has been among the standards for high-end road bikes for many years now. It has all of those components. The electric motor doesn't have to drive the wheel.