The meaning is that permanent standard time is preferable to permanent DST, because it's more important during winter: during summer you get plenty of sunlight no matter what you have on the clock. That is, if we optimize for health instead of shopping.
I disagree on summer time, summer time makes they day on which it's possible to do outdoor activities in the evening come about three weeks earlier than without it. And sunlight around 5am when virtually everyone is asleep is much more useless than having it late in the evening.
