Zubrin is actually salty that Felonius Huskrat is giving so much money to waste on fucking twitter (which will never be profitable), instead of investing it all on Mars. The man has lost his focus. He should've done the disruption to agriculture with that cash - not only could he rightfully shut up detractors by actually ending world hunger while making a profit, he'd also be funding research on how to be self-sufficient on Mars, specially with the proper agricultural output to justify it.
But no, he has to waste it buying the most retarded social media instead. I am honestly disappointed.