We were talking about this, the way cruise ship passengers have been treated would absolutely make me reconsider ever getting on one. I'd be very surprised if they didn't suffer irreversible damage.
This situation with Covid 19 may resolve, but in reality it's just highlighted that in situations like this countries can and will refuse to offer help to passengers, and you are incredibly vulnerable.
I think there are a number of industries like aviation and cruise ships that should have been about to see a day of reckoning because of unsustainable climate emissions and I hope we can use this as an opportunity to bring that forward, but provide proper support to staff who need help to retrain/find other industries.
I looked into cruises a few years ago, thinking it could be a good way of travel with a small child and potentially less harmful than flying. Couldn't believe the level of damage they do, carbon, pollution, and lots of cities say they are incredibly harmful for tourism as they bring no boost to people staying, often don't even eat in places they're visiting, just come, cause damage and leave.