I don't understand what you mean by this? My clothes will smell really bad if I leave them in the washer wet. If the appliance has a leak, I need to be nearby to remediate. Thus its not safe for me to start the appliance before I leave for 8+ hours.
If I can remotely start my washing machine, just prior to me arriving home, I can move the clothes to the dryer.
They turn over and blow cold air periodically to prevent them getting stinky.
As opposed to having your clothes be in a wet clump for hours? Between the two choices I'd prefer it being dry, because I know at least there will be less microbial activity.
30p/kWh in the day, 12p/kWh at night.
Dry an entire load for less than the cost of a Day Rate kWh, simply by pressing the "delay" button a few times.
It’s not common to have separate units here though. Much easier to setup a wash/dry cycle timer.
At the same time, I don't know if they're actually worth the downsides of needing to create an account, having hackable IoT things, installing an app per appliance brand (at least), etc vs, say, a timer and/or delay.
Today, give me any HomeKit supported device and I’m satisfied it will work for as long as I need it to without some dodgy 3rd party app siphoning my data.
And let’s be honest, if you were buying fridges or washing machines based on WiFi features that’s on you. Locks and lights have legitimate uses for remote control and always have.