Living on the wrong side of a time zone can be hazardous to your health

The article contradicts your statement. The reason longer light hours are worse is because they get fewer hours of sleep due to staying up later, but still have to wake up in the morning at the same time.

If we abandoned clock swapping, it wouldn't be an issue because yes people would stay up an hour later, but work/school would also start an hour later so no lost sleep time.