I'm genuinely surprised we haven't had something like that happen....yet. All these "smart" appliances, fridges, & stoves gotta have the same vulnerability just waiting to make them bots. Considering they're all running some old Android instance.
It has happened. Lots of these devices ARE on botnets. I think it was cloudflare who claimed a significant amount of DDoS traffic comes from hacked IOT devices
maybe we are just missing the news.