Depending on how late one is eating, I would need to see evidence about this digestion and detoxification that you claim occurs in the morning. I don't recall reading about that before. Food passes from the stomach within a couple of hours, I believe, so I'm not sure what it would be doing that requires much waking effort overnight.
I have read that it is better to eat heavier in the morning and afternoon, and have a light dinner, so your body isn't trying to digest a large meal while you sleep. It's not like your intestines ever stop anyway. Provided you are not eating things that cause you to pass waste too quickly, the entire digestive process takes more than a day, from mouth to toilet (or ground, hopefully not the floor though).
If what you've described is the case, I feel that an early morning meal was incorporated because of work schedules. It's impractical to stop working mid-morning for a meal. I could wait until 10 AM or later (getting up at 6:30 AM 5 days of the week) for breakfast, as I'm usually only "kind of" hungry in the morning, but it's not practical for me to eat a reasonable meal at work.