On an unrelated note, the FT reported today [1] that Israel was able to track Iranian leadership by hacking "nearly all" of the traffic cameras in Tehran. Anyways, I think we should continue to put as many networked cameras, microphones, and other sensors in as many products as possible. There are no downsides!
I also don't like having doorbell cams everywhere, at least not the ones that upload all their footage to the ~great mass surveillance network in the sky~ Cloud(TM). I don't think that's an uncommon point of view. And body cams are only worn by cops and at least provide some concrete benefits in terms of increasing police accountability.