“Marx is only interested in human problems on earth, and cares nothing for non human issues outside of earth” is a truly straw clutching criticism for a philosopher who was speaking about human societetal organisation which at that point was entirely on the surface of the planet (and to all practical purposes remains that way presently).

Yes, he neatly explained political economics, but he didn’t say anything about gas/plasma currents within stars, or of non carbon based life’s bio chemistry so I think we can ignore his works as irrelevant as he fails to consider wider issues.

Also how can it be progress if capitalists don’t benefit??