"The one advocating the contemporary relevance of Marxism is surprised by how things played/are playing out, the one doing the opposite is not."
That was because the guy said he was surprised the proletariat hasn't revolted against the ruling class yet in the US or whatever. It wasn't addressed to all Marxists, or I wouldn't have said "The one..." after quoting him. He was surprised that the ruling class hasn't been overthrown, I wasn't. That's all.