imperialism isn't "when a country goes into another country", it's a specific relationship of domination and resource extraction and impoverishment of the people living in that country in order to exploit it for the benefit of the imperial core (more often, its bourgeoisie).
it's really disgusting to see people using the language of the left to describe the USSR abolishing homelessness and poverty in their constituent states, and building schools and homes and providing jobs and extremely low costs of living, as if this is even remotely comparable to the horrors that the Europeans and United States have wrought in developing countries around the world, including sweatshop and plantation slavery, forced starvations, and genocides.
"but they did those good things authoritarianly!" a) literally who gives a shit, and b) every government does everything authoritarianly, it's the definition of authoritarian. ripping away resources from the rich landowners and distributing them to the poor is extremely authoritarian and I definitely support doing that