Yes, but the article is about 6-hour days, not mix-and-match-hour days.
It will be interesting to see what differs from 8-hour days, both in free time, shopping, traffic, and more.
Imagine that the 6-hour day is successful, and we can make shifts. Some people go to work from 8 - 2, others from 12-6. That could lighten some traffic jams I venture.