Surely the letter could be displayed on screen like most other tech displays some text of sorts before an update occurs.
Are these letters designed to satisfy the legalese types, or is paper still required to make sure tech companies dont make post update changes to the letter contents?
Statistically these are not likely to be Tesla owners, but it's about making sure people know about the issue and how to fix it.
Incidentally, when you point out the issue of missing a theoretical electronic version of the notice because of spotty Internet connectivity, in such a scenario, they wouldn't be able to receive the OTA update either.
Locations where multiple Tesla vehicles are likely to congregate - Superchargers and Tesla retail/service locations - already have good internet connectivity.