Why do people care who Satoshi Nakamoto is/was? It's like wondering the name of the person that created the wheel. Sure, I suppose I would be curious about the name of the inventor of the wheel, if nothing else to raise a beer to them from time to time, but ultimately the wheel is the important part of the story.
The reason could be that people know the creators of other cryptocurrencies in the market but they don't know the creator of the top cryptocurrency in the market. And I think people are really right about thinking like that. The curiosity is increasing as time goes on.