Where none of the people running these schools ever kids? Did they just magically appear from some portal from another, sad, apathetic, dimension? Or where they spawned out of eggs laid by depressed lizard people?
My school had 2 recesses, one 15 minute morning and one 30 minutes at lunch. They were absolutely crucial to social emotional development, and to just being outside.
6 hours of focused learning for 5 year olds? What type of massive idiocy is that. Ask the brightest college students how many hours of classes they sign up for, and unless you are talking to a crazy person, the answer is 4, with 3 being preferred by most (and considered a full course load!).
There is oodles of literature on how many hours a day a person can sit down and learn. 6 hours inside for a kid is wildly outside of recommendations.