I'd consider owning such products like Alexa or Google home quite risky. As you mentioned in your posts, are a means of a surveillance system if they fall to the wrong hands, such as hackers intruding to the home network, plus there are enough devices that track us each day, every day.

For using a smartphone I risk compromising my privacy for the sake of great advantages, but I can't see those advantages in Google Home or Alexa.