I agree that anyone who actually takes any notice of the scam calls is asking for trouble and should not own a phone or other device.
I find your comment is rather rude to elderly people and people that are not so tech savvy.
I know my parents are not that tech savvy, sure my mother is able to build a PC from scratch and she knows to just hang up on the scam calls, my father sadly is not really that tech savvy since his 3 strokes, so we have to keep an eye on him.
Due to the above a lot of stuff my parents pay for (i.e. BT, SKY, Gas, Electrics etc) have my private mobile number as the first point of contact, so I have told my parents if anyone phones stating they are the above people to just say goodbye and hang up.
And you saying people that believe the scam calls shouldn't have a phone or other device, is completely wrong to say, sure we need to explain to them the issues, but its not their fault that they grew up in the days you could leave your door unlocked, hardly anyone got stabbed etc, sadly things change and where almost everything is now all digital and that some people can pretend to be people they are not, they need to be made aware of this.
So if you get pulled over by a couple of people wearing policeman uniforms who gets out of a car with flashing blue lights.
And they then seize (steal) your car, does that mean you were stupid and shouldn't be allowed to own or be driving a car.
No, its just that some people are nasty and very good at deceiving people, sure sometimes alarm bells are ringing in your head, but this isn't always the case.
Paul