Exactly. It's evident that most old people are reluctant to change their ways. They've been accustomed to the traditional monetary system powered by physical cash for a very long time. It'll be quite challenging to introduce Bitcoin to the elderly because of this. You're going to get better luck teaching Bitcoin to young people than you'll ever have with old people. At least, the pioneer cryptocurrency won't be going anywhere as it has loyal supporters backing it every step of the way. With many educational materials available either physically or throughout the web, anyone can learn about Bitcoin if there's the desire to do so.
In the end, Bitcoin will become adopted by the new generation as the old generation fades away. Before you know it, adoption for the pioneer cryptocurrency will increase like never before. Already, we're experiencing high demand because of the COVID-19 pandemic. More people are becoming aware of Bitcoin's true benefits relative to Fiat. My guess is that old people willing to participate in the decentralized economy, will simply leave someone in charge of their Bitcoin funds. They don't need to understand how Bitcoin works, other than watching Bitcoin's price on the market everyday. It's not the same as investing and using Bitcoin directly, but at least it's a workaround. Just my thoughts