I agree with you on fax machines i was involved in the setup and deployment of fax servers in our company and the biggest fight was with people who felt they were still needed and for the same reasons as you suggest with file Nd end to end encryption technologies very robust now they could be phased out, I don’t or in that area now but i have no doubt we still have some around and in operation.

The one i hated with a passion and was glad when cell phones made them obsolescent was pagers,, so frustrating hen it goes off and you had to make it to somewhere to call in and see what was up, or in one job that whenever the pager went off i had to go tot he office, often the problem was not a real problem and could have bene resolved with a little common sense by the user, but no I had to waste my time going to the office to do somehting so simple