“They’re consistent libertarians, have been for a very long time.. It’s a political philosophy. You can look it up.”
...and that political philosophy is not compatible with national sovereignty (as that would restrict the free flow of inputs, e.g. labor). That political philosophy is also not compatible with cultural mores/laws that interfere with “individual freedom”. Yup...I’d say Libertarianism could support globalism with a clear conscience as long as “Libertarian culture” was being spread. I flirted with Libertarianism for a while until it became clear that they were typically nothing more than effete materialists.
I disagree with many libertarian positions as well. Support them on some - primarily those resulting in more freedom and less government.