I know it's not the takeaway from your post, but if you're actually getting one please test the litter robot throughly before allowing your cat to use it unsupervised. I've seen videos of horrible designs that have killed pets before and when word gets out, they just re-brand them.
I forgot to add an /s for the litter robot, but you are absolutely right. These devices can be dangerous for cats, and Amazon does absolutely nothing about them.
I have watched a lot of videos on litter robots from “One man, five cats” on YouTube. I highly recommend them, especially the video where he tests the litter robots with cat plushies that almost get decapitated.
I set up a guest network called "Chinese Spy Devices" that is behind a VPN and all my electronics that need an internet connection go there. Have fun talking to each other guys!
I forgot to add an /s for the litter robot, but irregardless I agree with you about a separate network for “smart” home devices (IoT). I have three networks that are firewalled from one another. One is specifically for these kinds of devices.