Some of these "smart" devices are remarkably dumb.
I noticed my Chromecast if it loses WiFi will go back into pairing mode where ANYONE could claim it as their own, as there is literally no other way configure it if its not connected to WiFi. It could be really annoying if your neighbours wanted to prank you.
I wonder sometimes if they only test these devices in big houses in the US with metal insulation where WiFi doesn't spill out of the house. In the real world, having a button to put them into pairing mode makes way more sense, but I guess for anyone who has it behind the TV it would be too annoying.