My grandmother can use her iPhone just fine, thanks. Old people just grew up still very deep in the “shame” style of teaching and so many are incredibly hesistant to learn knew things. They ‘re either proud they don’t know so it’s “cool” or laugh it off and say “haha old dog!”. Learning the new thing would require exposing themselves to a lot of information they don’t know and the struggle of learning it which all that trauma makes them afraid of.