lol this is nothing new the tech has been around for over a decade. It’s not like you’re going to be building large custom homes.
What foundation? You can build houses on slab on grade in lots of places. You keep saying ICF, I don’t think you understand the usecase here if you’re thinking it’s replacing ICF type housing.
The machine is fed automatically by hoppers, like any other automated machine. They get filled up probably every couple of days, leaving the tech to install the windows when it gets there.
Just because you’re ignorant, doesn’t mean it doesn’t exist or do something cheaper.