No camera on the Nest Guard, which is the subject of the article.
I have about half a dozen Amazon Dots around the house. Mostly I use them for playing music through Bluetooth speakers, but they are also handy for turning lights and heaters on and off and a lot of other stuff you normally would not think of. There are thousands of uses for them. I think Jeff Bezos is too busy with his own difficulties to bother spying on me.