Do we think Vance is stupid enough to not understand that NATO primarily benefits the US?

Right, regardless of any broader foreign policy view, Vance should at least understand it in purely cynical terms for bargaining leverage.

But I think blindly grappling toward tariffs and no NATO is part of the instinct for attacking liberalism and neoliberalism in a big hot tangled mess of reactionary instincts rather than an intentional road to a different vision.