I have some Hue strip lights above my stove that are called, you guessed it: "Stove". Fun were the days I could bellow, "Alexa! Turn on the stove!" and there was light.
Now, this only works maybe 15% of the time. Usually she says, "Sorry, I couldn't find anything to do that. To get started, you need a smart kitchen appliance".
I even tried creating a specific routine to override this behavior and I have the same result. So somehow, Alexa thinks she's looking for an actual smart stove, which I don't have.
This is something that recently broke so it must be due to a software update.