This strikes me as a massive overgeneralization. States are just an organizational structure of institutions, tasked with operating a society. They are not intrinsically inclined towards building concentration camps any more than they are intrinsically inclined towards providing healthcare or delivering a basic income. States operating under an ideology of madness will operate as if mad. States operating under an ide…
At least in the U.S. a potent mix of cynicism and tribalism with the two party system makes this extremely difficult. Lots of people take for granted that the system is broken. But when you actually begin to discuss policy they are likely to interpret criticism of their cynically chosen party's position as cynical politically motivated flak and defend accordingly.
In that kind of environment "least terrible" doesn't seem to function anymore.
I've wondered if one attack on this vicious cycle could be flippism. Exercising my right to vote for a randomly chosen candidate may be repulsive enough to most Americans that they may actually prefer to use their critical thinking skills to convince me not to do that. (I.e., I don't think most Americans are as cynical as they claim to be.)