I think people are forgetting the purpose of a fridge. People already store food that doesn't need to be kept cool. They already throw out food based on dates stamped on packaging, not condition of the food. And they keep spoiled food in the back, forgotten. The fridge is a terribly mis-used kitchen device. So unless Alexa somehow develops a way to interact biologically with the contents, I do not see it as a good functional fit for that device.