Earlier quoted context omitted.
I'm not sure why this is getting down-voted, but I think the point here is the _fact_ that you have been put in a situation where, as an individual, you are concerned enough to do this is telling, crazy or not
This logic could be used to say there is a problem that some people believe they need to wear tinfoil hats to stop mind-reading. No, we should help them seek medical help. It's easily verifiable to check if your phone is sending data, so if they're concerned, they can check that like many people do and find out what data is being sent. But stopping a conversation midway through to hide your phone to continue to talk…
Insurance companies analyze purchase records for modeling lifestyle risk.... if I were discussing a family member who had a health scare how do I know that info isn't 'surfaced' to insurers, etc?