We avoid crowds anywhere, just because we love remote walking, so a huge floating hotel has zero appeal.
We have friends who love cruising. Currently they are somewhere in South America, but they love crowds, even at home and do theatre and cinema constantly. They have both been ill on cruises and he got pneumonia a couple of years ago, and spent more than a week in the sick bay, and a huge medical bill which his insurance paid.
This virus could be the start of a shift in habits for some.