Comparing market cap of crypto to traditional public companies is meaningless

I keep reading headlines like "Ethereum is worth more than Honda". The more I think about this the less it makes sense. Market cap for a publicly traded company represents the value of that company, stock price times total shares. "Market cap" for a crypto currency represents the total value of that currency, price times total coins in circulation. And in the case of Ethereum it strives to be nothing less than remaking the economy. A better comparison would be the total money in circulation of a fiat currency like USD. Or GDP of the nation's of the earth. Bitcoin, Ethereum, and other serious crypto are going to get monumentally larger than even the biggest company in the world.