These old people started their career when computer use became a job requirement for any office work. A few years more and homes got saturated as well. A 52 yo was 20 thirty years ago, in 1996. Have you heard about Napster, MS Office, Netscape, Windows 95 / NT, Hotmail, AOL, Messenger, ICQ, Doom, C&C, .... hundreds more. And everything else since. They had to live through those every day, keyboard+screen instead of pen+paper.

...aren't you confusing them with the generation above 80?