I think the capacity of elderly people to adapt to change is under estimated. In the early years of this century I had uncles heading for their 90s and more, who were quite happy using the computer and, at present, both my 90+ aunts are using computers to send email, order food and manage their affairs. As our many other friends in their 80s.
There will always be some who struggle, I heard someone in their 50s on the radio yesterday proudly boasting that he didn't use computers, ever, for anything, but the computer industry started in the late 1950s so there are more and more people in their 80s now who have worked with computers all their working lives.