Random point (and definitely not agreeing with OP), but Zwift (and probably others before) has brought on an age of watts/kg competitions.

And a lot of being aerodynamic on a bike is athleticism: you need to be flexible enough and appropriately trained to be in the right posture. The bike frames, skinsuits, etc, are all in the "marginal gains" territory.

I still think OP's take is wrong though.