It is important to have a clean appealing design in all mediums that speak to many and not just one particular audience.
What I think Steve Jobs was trying to say is that – Design is all about how it Works! Things can look pretty but it is not only how someone can look at the piece of work in all aspects. It is how one relates to it, finds it easily, understands it and wants to use it again that makes the design great. This applies to everyone – new and old users. Today a designer not only wants to make their work appealing but make it work now and in the future as well. Beautiful just isn’t cutting it anymore. Remember to make the design that WORKS!