I’m always staggered by how stressed and tbh (not necessarily their fault given the circumstances) unprofessional US ATCs sound.

Sharp contrast with Europeans

In Europe is illegal to capture and publish ATC. I wonder why. Anyway I do not know what are you comparing.

From pilot friends, in best case I would say a big “depends” in some countries are very unprofessional, in others very professional (anyway total unfair generalization). There were already accidents because of that, for example because the twr communicated with locals in non english, so not everybody was at the same page.