But having it on a kettle or coffee maker or a rice cooker makes no sense.
On a kettle, no.
I'd love it on a coffee maker because I actually use the delay brew feature. Give me a clock that adjust for DST and a delay brew that I can sync to my schedule and I'd be kinda happy.
DST compensation in itself could, IMHO, justify anything with a clock capability to be IoT capable.
It might be useful on a rice cooker (or anything else that takes a long time) for notifying you when it's done cooking.