If you cross an ocean on a sailboat, either putting your life or the life of your crew on hold for days, are you still using resources in the best way? If I own a business that employs a bunch of people, am I better off taking time out from running it to sail somewhere so I can save the transportation emissions, instead of focusing my time on helping all those people be productive? People already choose transportation based on how their time can be used most efficiently. Maybe you could argue that wastrel bitcoin playboys or whatever should travel by sailboat, but the for the majority of people, even a sailboat is a pretend 0th order win that neglects any other effects of that travel choice.
