Interesting those are totally valid use cases but I would NEVER use those through a vendor specific app/cloud. Only locally connected to Home Assistant or something like that via MQTT or some other protocol. I wouldn't want someone from the outside turning my oven on or worse, start the super hot cleaning cycle when I don't expect it the same way I wouldn't want someone having control over my front door or garage.
Opens app.. "whoops I did, toggle off"
> "Oh I'll have to cook soon"
Opens app.. "start preheating to x degrees, notify when ready"
> "Oh how long do I have left on my roast?
Opens app... "ok cool 30 minutes, I'll continue my workout."
I mean... putting the food in is only one short step in the very long process of an oven.