Whilst I’m not convinced that system is quite as good as the post you quote portrays , it is for most a very profitable system.If everyone went to that system there’d be no money in it. It’s only the farms that supply the autumn/winter milk that allow spring calving herds to make money.
Can you imagine the milk price if all milk was produced in spring/summer.
I think many of these low input/grazing herds overlook this fact.
And whilst you are no doubt right that if everyone jumped on the bandwagon it would sink the ship..........
Just so long as too many don’t go down that road why wouldn’t they.