Years ago there was a young couple and their infant daughter who were hiking Mt. Hood when they were surprised by a late snowstorm. The couple, ardent outdoor types who understood survival, made a snow cave and hunkered down to await rescue.
The young mother breast fed her baby, then later died before the three were rescued. Doctors said if the young mother hadn’t breastfed she wouldn’t have died.
So yes, there are people who take recently born babies out into the wilderness.
I recall that story. The problem wasn’t with breast-feeding, but that she kept eating snow to make milk. By eating snow - instead of melting it - she was lowering her body temperature.
I always remembered because not being much of an outdoors gal myself, I figured I’d probably just eat the snow, but now I know to melt it first.
The mother died because she ate snow believing that she needed water to breastfeed. Warming up the snow inside her ate up a lot of BTUs that eventually killed her.
Based on that story and the other one, it’s not convincing me of the wisdom of taking newborns camping.