This is one of those things that can kill itself if widely adopted. Several recent articles have touted the benefits of early rising. Being able to start your day in peace and quite is truly a benefit of waking up early. But if everyone adopted the strategy, if everyone was there with you to watch the sunrise, the gift of temporary solitude would be gone. I tend to like to work alone, whether early in the morning or late at night. The asynchrony with the rest of my immediate world is the key.
I'm not sure this is entirely true. I understand the logic, but it's important to note that theres still a net positive in the more subjective ideas of "greeting the day" and finding yourself in a more calculated, healthy routine. Waking up early in the morning, if surrounded by many who also do the same, also lends itself to being surrounded by a group of typically disciplined, motivated and honest people, where little downside can be seen. All of this is deeply subjective, but I think there's some logic to it.