The difference is between the possibility someone might look and the guarantee that they are looking.

> nobody seems to care.

I don't care if nobody else cares, but I care. If someone crafted a home/garden robot that is fully autonomous using local AI or something like that then I'd be interested.

Just because a large percentage of the population either lacks the ability to understand why it's bad to have a livestream of your home being sent to China or simply doesn't care doesn't mean it's not a problem.

Second, for robot vacuums you can flash them with Valetudo, a completely local control interface. The robots even run a custom DNS server that prevents them from ever phoning home.