The Achilles heel to this method of rescue is simply logistics.
Ability to put the basket(s) on scene.... and then being able to perform the lifts.
Just how do you achieve that is the problem....Cruise Ships cover a lot of ground during their operations and evacuations from some distance from shore become very difficult to carry out.
This is one of those "Solutions looking for Problem" situations I am thinking.
Baskets for multi-person evacuations from tall buildings in a large urban area.....that makes sense.
Lifts during large area floods.....again I can see the use for a basket.
Cruise ships well away from shore....not so much.