I can see value in HVAC IoT. Away from home and there’s a cold spell? Turn up the heating so your pipes don’t freeze, but also run it higher when electricity is cheaper (if you have variable pricing).
I don’t think I’d want my microwave, washing machine, or toilet to have IoT features though.
Mine chimes a quaint little song. It’s enough because it can be heard pretty much anywhere in the house unless I’m in the basement. If I’m not home, the notification wouldn’t be particularly useful - I might as well just check when I get home.
I mean the idea isn’t the absolute worst. I just don’t think it’s a huge QoL improvement either.