It’s important to note that fax machines aren’t point-to-point either. Your data is still passing through someone else’s switches (probably fewer hops, mind.) and then there’s the physical security on the other end to wonder about.

The last fax I saw was in high school and it was left out for any one to grab documents from. (Well. Inside the school library right near the librarians desk.)(she had a somewhat unearned reputation for being terrifying, so, you’re mileage might carry there.)