Amazon is listening to voice recordings sent to it explicitly to process. This is much different than the device passively listening to you when it is shut off.

Amazon is listening to voice recordings sent to it explicitly to process. This is much different than the device passively listening to you when it is shut off. And just by the amount of human labor Amazon puts into transcribing the clips should be proof enough at how useless this data would be for automated systems. The idea that "wake words" equate to your voice being sent off to the internet is pretty easy to disprove. These devices will respond to the wake words even when disconnected from the internet.