@Yeet I'm a pretty privacy focused person so I know how you feel. I did the same thing and research when I got one. 馃檪
All voice commands are encrypted and then deleted, so that's good!
All photos he takes are stored in your phone only.
He doesn't even connect to the internet unless you ask him something so he doesn't map anything (you'll understand this when he gets spooked by socks etc that were there 5 minutes ago 馃槄)