He didn’t thought about… unplugging the bed?
It has to be user accessible to refill water, it needs space for airflow, and has to be next to the bed because the mattress water/data/power lines run to it on a limited length umbilical.
It uses a standard IEC C13/C14 power cord. There's no sane configuration where it would be anything more than trivially easy to unplug the power.
But you'll get more retweets and social media engagement if you just stew yourself in your smart device hell and let everyone else know how its going.
TBQH I don't even see why heated mattresses exist when heated blankets are so effective and doubtlessly cheaper. Now, a cooling mattress is another story..
I thought that a cool/cold bed was better for getting to sleep, since the body lowers its own temperature at night as part of it's natural circadian rhythm and because cooling helps produce melatonin.
And when you are asleep, cooling gives you a deeper sleep and can reduce insomnia. So instead of a £3000 mattress that heats up (and by default does so), you just need a thin duvet (or even just the cover in summer).
Multiple people have died, because the power went out during a fire, and they couldn't figure out how to evacuate without a working garage door for opener.