I think it's an interesting belief - that democracy doesn't scale/work when there is no growth.
But if you combine it with the belief that we can't have growth forever - see "Limits To Growth", Donella Meadows, etc - then it leads to the question of: what kind of government form should we have if both beliefs are true?
But if you combine it with the belief that we can't have growth forever - see "Limits To Growth", Donella Meadows, etc - then it leads to the question of: what kind of government form should we have if both beliefs are true?