I agree with all your points on Communism. At least in terms of how it's been implemented, at least in name, by the Soviet Union and the PRC it has been as extractivist and imperialist as Capitalist nations.

Though one can't really divorce the conditions in countries such as Nigeria or Bangladesh from Capitalism. The Global North's standard of living requires the conditions there to exist, the Socialist with Totalitarian Characteristic nations at least keep their poor conditions mostly in house (albiet with some local imperialism, and the PRC has recently started expanding outside it's borders though mostly infrastructure and resource acquisition so far.)

They're not quite two sides of the same coin as the goals for growth are expressly different but neither cares for social connections, a sense of belonging, society in the real, let alone the environment.