Interisting Thought !
However, there are times when it makes sense to turn the light off to start the bike, especially as a battery get older, and the weather is cold.
I have trouble with the concept that the US Government know what is best for me, (light on, all the time), when the European Governments leave it up to the rider.
We currently have four (4) different levels/layers of light on the bike, and I don't think being invisible is a problem.
Thanks for the concern.