Ain't reading all that but yes, any marxist who had read Bukharin, Lenin and other marxists who had done analysis on imperialism knows that. Unfortunately, marxism has been suffering from its fair share of modernizers and falsifiers, most notably stalinists (ML's) and it's ideological offshoots (maoists, national socialists, communizers, eurocommunists, etc) who more often than not take up campist stances and distort material reality or texts and end up supporting """anti-imperialist imperialism""" because it goes against the west. There's no use bringing up Lenin since they operate within an entirely different worldview.
Anarchism has pretty much the exact same problem though, there's a lot of 'anarchists' here who go through the exact same mental hoops to support Ukraine for exactly the same reasons for instance.