How do you expect to solve the bitcoin problem? Stop mining?
At least the utility of cargo ships is pretty tangible, whereas the utility of bitcoin has yet to manifest itself.
Is it? I've heard that cargo ships are a bubble. They are used only by drug dealers and money launderers. There is no utility of a cargo ship and people who invest in cargo ships are doing that because they believe they will be millionaires. Lol, like moving stuff between places could be worth money!
Do you have any idea how much debate and research there is in the shipping industry to reduce the environmental impact? Meanwhile in the Bitcoin community, apparently no one reads anything other than crypto news and white papers.