If Beethoven is on that list, so is Prince. If Thomas Hardy is on that list, so is Toni Morrison. Mozart could write a 5 voice fugato, and Quincy Jones can score out an orchestration without even sitting at a piano.

There is no shortage of exceptional people changing how we think about and interact with the world. Again, it just doesn't look the same as it did in the past. You might not like them -- I really don't care for Thomas Hardy's writing and Freud is largely cast aside these days -- but that doesn't mean they aren't geniuses.

According to whose definition? If Tolstoy, Marx and Beethoven count as geniuses, I don't see an argument for excluding Asimov, Musk or Eminem.