You're not wrong, globalism and nationalism go hand in hand. All those Twitter bluechecks glazing Trump and trying to drum up the right-wing controversy of the day were exposed as people from third-world countries shitting up the American infosphere for cash. When British far-right nutters say "We can't import the third world", keep in mind that third-world dictators are saying the exact same shit about other parts of the third-world. Nationalists work in lock-step.

Left-wingers are only globalist in the most literal sense of "well, I'd like it if we got rid of these migration barriers". "Internationalist" would be a better term for them.

Globalist Nationalism is an ideology of contradictions. It purports that, no really, you're the real master race and everyone else's just a stooge that'll get taken out the moment we can get rid of these pesky liberals with their freedoms. They need shittons of spatial partitioning to make that work.