This really just seems like an odd statement to me. The market cap of just the S&P 500, which is denominated in U.S. dollars, is over $30tn, which is 50% more

This really just seems like an odd statement to me. The market cap of just the S&P 500, which is denominated in U.S. dollars, is over $30tn, which is 50% more than the M2 money supply of U.S. dollars. So, explain to me again how these things should meaningfully be compared?