Right now it's easy to understand the basics in a short period of time. But with the years the whole cryptocurrency ecosystem would become more complex.
And maybe in 2030 it would be as hard to understand it as it is now to understand for 80-90-old gents and ladies the principles of the web.
I clearly did not understand what you are trying to tell here,the so called 80 year old individual by 2030 means that they are currently having 67 years old and i am sure most of them who are interested in learning about these things would learn by now and the world has changed drastically and who does not have a smart phone right now.