The only two things that I like about smart appliances:
remote preheat for the oven (ready to pop the frozen pizza in right when I walk in the door)
cycle end notification for the washer (when I’m in the basement I can’t hear the sound to know when to move the clothes to the dryer)
I can’t imagine needing a notification on the dishwasher (I’m never wanting for it to finish to do something else) or refrigerator (just what even would it do).
I guess the smart control of the hvac is nice (turn it on when I’m on my way back from vacation so the temperature is perfect when I get home), but does that count as an appliance?