This is a neat feature when it's your own device that you control, but not so great when they "disclose information generated by WiFi Motion to third parties without further notice to you."

I wanted to talk about how responsible WiFi router software authors can make things local-only (and I've done that in the past; no way to get this information even if I wanted it). But this is always temporary when "they" can push an update to your router at any time. One day the software is trustworthy, they next day it's not, via intentional removal of privacy features or by virtue of a dumb bug that you probably should have written a unit test for. Comcast is getting attention for saying they're doing this, but anyone who pushes firmware updates to your WiFi router can do this tomorrow if they feel like it. A strong argument in favor of "maybe I'll just run NixOS on an Orange Pi as my router", because at least you get the final say in what code runs.