Earlier quoted context omitted.
Not in the case of the device being someone else's. I don't have any Google or Amazon smart listeners, so I never accepted them. Yet if my voice is in any of these recordings, well...
How do you square that with a security cameras? Do you need to consent every time you enter a space secured by them?
I think the laws are different primarily due to the different pace of audio vs. video recording technology. Audio recording of phone calls etc. has been feasible for a long time so laws were written about that. Ubiquitous video recording has really only become a thing in the past 2 decades or so.