Many of us have enquiring minds, and are prepared to look at new concepts with an open attitude.
Not disputing this as a fact, but in truth, they are mostly open minded to accept new innovations when presented by someone mature, around their age grade, someone they are already familiar with, a successful individual, someone they deem knowledgeable in a particular field and not just any random individual. The elderly are selective of the information they accept.
Yes, people within the Sexagenarian to Octogenarian are mostly open mind and also good listeners but when we talk about innovative technology or concept I think it's not about age but personal interest and understanding. We have people who are Teen to Quadragenarians and never want to get involved with Bitcoin but they can spend half of their 24hours on meaningless social media activities.
I respect the OP for taking teaching to a new level because the belief of most crypto users is that a mature person cant acknowledge cryptocurrency.