I agree that bitcoin is simple, but someone will not see the simplicity unless he has spent time and work to understand bitcoin. We can sit here all day preaching that bitcoin is the best savings technology ever invented; however, without spending time to properly learn about bitcoin, someone from outside looking-in will only see it as another speculative asset, or worse, a Ponzi scheme.
I think bitcoin, like any other subject or skill in this world, only becomes simple when you have spent time and work to learn and understand it. Education is key.