>Do we need to therefore instrument our stoves, ovens, baths and basins to insulate ourselves from the other common domestic nightmare scenarios?

Exactly. There are a lot of things that could go wrong in daily life.

Let's say you are sleeping and one of the bed slats bends or breaks (this has actually happened to me). It's messy, especially because you wake up and putting the bed slat back is not easy. So what do you do? You either ignore the fact it may happen, or you say "well if it does happen, I guess I'll sleep on the couch or something". No one that I know, even among the most "smart home" obsessed people, has a bed which automatically beeps or sends a push notification if the slats are about to break.

Ok, now you wake up and nothing bad happened so far. You have breakfast (maybe you have a smart fridge which ensures you're not running out of yogurt or whatever). Then you go dress yourself. But then you realize your favorite shirt has a stain you didn't notice. Do you have a drawer that automatically beeps if your clothes have stains? Probably not. You either remember to watch closely your clothes and wash them properly, or say "whatever, I'll go with something else and I'll wash that later".

And so on. Life is full of minor inconveniences. That doesn't mean you should necessarily fill your life with sensors and beepers for every possible scenario. I might be getting too philosophical, but part of life is also becoming aware that things happen and you can't always be 100% safe in any possible scenario.

People are taking this waaaayyyy out of context. I said it was handy. I didn't say it was a must feature or even one that make me choose a particular model or pay more for. But the fact my current fridge/freezer does it is a nice handy extra... I already have a billion things that spy on me, gather data so no I'm not particularly worried about what my fridge knows about me, the cameras all over the country I cannot avoid know far more already.