Disclosure of things like microphones on internet-connected devices is the type of no-brainer regulation that our regulatory bodies should be promoting. No need for real behavior changes, no need for giant Surgeon General's warnings, just a mention in printed user documentation, the same way products attest that they aren't in violation of FCC regulations on airwaves. There can be a healthy debate about whether this needs to go even further, e.g. legally requiring what Apple does for its laptop cameras in that a hardware light is lit whenever the recording system is powered up. But at least documentation-level transparency seems like a no-brainer. Unfortunately our regulatory bodies seem incapable of common sense these days, but that's a topic for another day.