It's a bad idea teaching old people to use bitcoin. Mostly old people in my country don't know how to use cellphone or computer. But if they knew, what will be in their mind if you introduce bitcoin to them? In news, bitcoin always mention because in our country many investment scam use bitcoin as their mode of payment. Old people always watch news, and if I'll introduce it to them they'll avoid it and think that it is a scam.
There is nothing on earth that humans cannot do. There is no way we can ignore the elderly. They can also get a better idea about Bitcoin if they try. We must remember that the modern age we are living in today is the gift of those old people. The old men invented the computer, so we can use it today. Mobile has not been invented by anyone in this age, it has been invented by the people of that age. So if we can explain them with a little effort, then they must understand better.
I agree with you. We can learn everything if we wanted to. Bitcoin will always be available to any age. Elderly can understand bitcoin if we will just have the patience in teaching them. If we can, I'm sure that they also can. They are born without modern technology and yet they now adapt and live with the technology. Not impossible for them to learn, we only need time