This is a good example, why not all devices should be connected to foreign servers.
Errors can happen everywhere.
But it could end badly, if some Corporations make errors and creating trouble, which would otherwise not happen.
In the case of the 3D-printer it is not that bad (except it destroys itself or even gets on fire), also you can turn it off. But imagine a smart stove top that lights up a towel (or something similar) while nobody is home.
Not, that I think that it is not useful to have something like that, but wouldn't it be nice, if that stuff would work locally?
(with the WireGuard integration in modems, the access from outside of home with the smartphone, should also be no problem for non-tech people)
If it's a child that's putting things on the stove that don't belong there (or any other hot surface) then it's a child that needs to be taught better by their parents.
Yes, if a child makes a mistake (which they absolutely will make quite a few), then the parents are supposed to educate the child better. That's a large part of parenting, nobody's disputing that. That's not the point though, the point is shit happens, and it only takes one mishap for all hell to break loose.
My roommate happened to burn like half of his entire back with 2nd and 3rd degree burns when he was 6 years old from hot grease on the stove. And he actually did know better, he just happened to have a mishap because he was young and a bit short to reach the stove properly.
Yeah maybe his mom shouldn't have allowed him to use the stove so young, but shit happens in a single parent household when mom is gone to work to earn money for the bills and food and stuff.