

From an objective materialist standpoint, democracies are a tool of the ruling capitalist class to legitimize its own rule and keep their position of class domination while providing an illusion to the working class that they have some sort of power in the matter (they don’t, all candidates are pre-selected so all you can choose is essentially the “flavor”, who ultimately gets selected usually is determined via campaign money spending and media, once they’re in power they gotta preserve the state machinery and capital in place etc).
Nationalism is also a very powerful tool of capital to unite people under single unified volk, deliberately obfuscating the class that might divide said volk and it’s constantly used by opportunists and conservative elements.
Given these two statements, I don’t think a world government like that can even exist, or if it did it’d implode via separatism from opportunists who want to be the next “great man”. US for the longest time was and still is closest to this kind of position though, but they sure as shit are never going to let foreigners vote.
True, but the post isn’t really talking about democracies in general but liberal democracies (the specific societies kind you mention), stretched to a worldwide scale. Probably should have clarified that.