I used wireless shifting in the 90s and my kid TTs with it now. We have both generations of Di2. And a power meter. I wish none of them were ever invented. I'm not at all surprised by this innovation. I wouldn't be surprised if the next step was coaches shifting for the riders based on their computer screens. F1 got rid of the anti lock brakes(so I hear) because they want the driver driving. This wouldn't be the end of the world, but I'd like the electronics gone from competition. Just have the officials set off some big EM pulse before each race and we're good.