Wow they guy is saying that Marxist.com "[echoes] the Kremlin’s anti-Ukrainian propaganda"... LMAO, this is a trotskyite website from a well-known trotskyite movement which has member organizations in many countries. This proves in itself the author's complete lack of political culture. I don't know who finances this website, but that's certainly not the Kremlin.
He says that according to Marxism some national movements were objectively progressive ("a capitalist national state provided a better context for development than the old empire" ) and concludes that "these factors should play a similar role today". A ridiculous assumption for there is two things: factors and context. And if the context isn't the same it's obvious that the factors won't play a similar role. Dialectics my friends... Even a child should understand that. Marx must be turning in his grave.