A timer to turn on an oven has been a thing for 25 years or more, probably there were clockwork ones before that. So it is down to very fine control on timing, or not turning the oven on, say, if you're in a traffic jam.
I'd expect the network connection to go down and the oven not to turn on at least as often as 10 minute makes an operable difference.
Maybe you don't decide at the start of your day, rather it comes up later that the kids want something baked for dinner that is already prepared and just needs to go into the oven, and you also get home from work at like 7pm. Idk how niche that is, but if that's someone's situation, the remote control makes sense.
Yup. Or the buses and the queues at childcare pickup and the speed of walking home with a 3 and 5 year old means that arrival times at home vary dramatically.
I'd expect the network connection to go down and the oven not to turn on at least as often as 10 minute makes an operable difference.