AKA permanent spyware
You must assume: if they can hear you ever, they can hear you always.
Amazon is offering bedside units with cameras. What could possibly go wrong?
In 1984, Orwell speculated the state would force us all to have in-home surveillance. We did George one better and went out and bought our own voluntarily. From Smart TVs to Alexa: I know of no way to consider these things safe to have in your home. My advice is to throw them all in the giant disk-drive shredder.