Maybe they do not have crew to do all the painting etc so you will see some rust I hardly think there are holes in the hull from the rust then that would be bad
Many of those that worked on the ships may have had to find other ways to stay alive & other jobs so going back to sea is not
for them any longer
I know the USA did not get affected by covid but some parts of the World did & they are still recovering financially 🤔
Goes for the cruise industry as well as many businesses
They may start to make some money in a couple of years remember many lines had to borrow big $$$ to stay afloat
so now they have to repay those loans
If you think the ships are bad then look at alternative vacations
JMO