That reminds me of a comment from when smart TVs were discovered to be sending filenames and other info, since it was sent in plaintext: "If they had used HTTPS, this might not have been discovered."

The most important thing to realise is that security can work for you, and it can also work against you. It's not only a "right to eavesdrop", but users will need to maintain control over their devices if they want the former. This is somewhat related to the War on General Purpose Computing, and what I think is the biggest dilemma is that users need to have a certain level of knowledge in order to understand what their devices are doing and control them; but many don't want to; they only see the advantages and don't care about how something works, whether it "phones home" or what kind of data it's sending, as long as it makes something in their lives easier.

News stories about how smart TVs phone home have circulated, and yet AFAIK people are still buying them in great quantities. They just don't care. They are outraged and shocked when the news appears, but shortly afterwards they carry on as if nothing happened. That, I think, is the scariest part.