I've been noticing this more and more, there's an insistence that pointed economic or environmental criticisms of some consumption habit, usually almost exclusively partaken by the upper middle class and wealthier people, must actually secretly be a purely cultural critique. I'm sure these guys work for Exxon or some shit, lmao.
I feel like that would just result in the cruise industry designing ways to ferry passengers out to only load the main ships in international waters because it would still end up being .4% cheaper to go to such an expense than to have to comply with regulations and deal with liability.
Or you'd just have rogue US states like Florida flaunting the regulation or coming up with some bullshit special zone things to let cruise ships continue operating with impunity. If not them then Louisiana or Texas would do it to try to attract more money to themselves.
There'd need to be stronger and more widespread actions taken to bring the industry in line, like actively making it impossible for them to operate and getting as many of their owners and executives into custody as possible, physically impounding the ships, etc.