Traditional landline calls are not encrypted. Do they not get the same expectation of privacy?
What if you are using a landline with a 90s style cordless phone? No encryption there, those things just spewed analog RF like baby monitors and cordless microphones. You can easily pick up those signals from the street; even further if you want to get slightly fancy with your antenna.
For a time it was legal to intercept those cordless phone conversations, since they were being broadcast over public airwaves. I forget if the legislature changed that before the industry moved their tech away from that kind of infrastructure.
I fully agree that "because someone else can read it, it's not private" is a bad argument.
What if you are using a landline with a 90s style cordless phone? No encryption there, those things just spewed analog RF like baby monitors and cordless microphones. You can easily pick up those signals from the street; even further if you want to get slightly fancy with your antenna.