Even dishwashers: https://www.jeffgeerling.com/blog/2025/i-wont-connect-my-dis...
Is there an opening to have appliances that lack connectivity as a selling feature?
The cell phone apps harvest data. Not so much on the actual appliance. There are also issues with the apps having malware bundled in them. They're just bad apps, generally.
The appliances do get hacked though. It's not unusual for IoT devices to be used in ddos attacks.
Really, this is just a good reason that everyone should be using, at least, router level DNS filtering to disable a lot of this stuff. One can go a lot further but that's a good start.
It's gross.
How often you use it and which cycles you use it for let me infer a few other things about other people in the house.
I can either use those to bolster confidence in a narrower profile or I can just add those data points to the raw profile and charge marketers more for either the higher confidence profile or the profile with more data points.