I am sticking with my Asus AC66U which has more features and is also cheaper than this Google device http://amzn.com/B008ABOJKS
So I replaced the middle antenna with a WL-ANT-157 from Asus, and wow. It's the best home wifi experience I've ever had in this price range.
Although I'm sure you're using DD-WRT or something...
http://arstechnica.com/security/2015/08/google-pushes-update...
Here's more... granted, these aren't all vulnerabilities that Google is responsible for, but many are:
http://www.cvedetails.com/vulnerability-list/vendor_id-1224/...
Remember Android wasn't originally designed by Google, and many of it's security design decisions and culture were inherited.
BTW Google is not exactly known for being good at updates of hardware, just look at the mess Android is, especially older phones
Even what they do mention is enough to start inferring things about your personal life:
With "historical data consumption" they can determine who is in the house and when. With the number and make of connected devices, they can take a pretty good estimate of family size, annual income, how many of your household are working, etc.. (Though they probably first care how many Apple devices there are connecting... maybe we need to send you some more Samsung adverts)
And sure it strips the URLs from the logs -- but between Google DNS and Google Analytics being on much of the web, they can piece back together every site you visit anyway and now your router has a Google account they can tie it right back to the router in your home.
And of course it's a $199 router with a license agreement that says Google can stop it working at any time they like (clause 5c).
It's okay to decide not to adopt the device in question, and it's fine to weigh how much you trust Google against what benefits you might get from any given device. For the average tech-savvy user, perhaps there's a lower value prop, perhaps there isn't. Some people like having absolute control, other people like someone managing things for them.