The Complexity of Cryptocurrency

cryptocurrency doesn't just suffer from do people actually know what it is and how it works. Is there a sense that it's just a bit too complicated? It is over complicated in the sense that we're talking about technology for something that nobody really understands at the moment. By the time we get to the year 2040 it will be impossible to make any more bitcoins there will only ever be the 21 million less whatever has been lost through natural wastage.