It’s because 100s of migrants drowning at sea is something horrible that regular people can’t do anything about. It makes us sad, and angry. Just like almost every other story about billionaire greed and the coming climate disaster.
Now, a bunch of ultra rich, regulation hating, planet destroying losers dying in a tiny submersible because they have the kind of money to go see the titanic for fun? That’s the kind of story that makes us feel good. It’s karma.