Sorry, but this device is idiotic. It gives Google the ability to entirely remotely control your network from outside, is entirely designed to facilitate their own services, and will become a privacy nightmare ... because if they can access it, someone else can, and law enforcement will be able to go to them and say "OK, we need access to that network, you have to give it to us".
This is the "bend over and take it" device which puts control of your home network in the hands of Google .. primarily to benefit Google.
This is a terrible idea, and it's not something I'd trust even a little. This is all about locking you into Google, and making it easy for them to manage your home remotely.
I would put absolutely zero trust in this device.