By that argument, indoor plumbing and safe running water can also be considered luxuries. Which, while true, is rather reductivist.
And if we want to talk history, having food made for you by other rather than making it yourself is not a new thing. Having a servant or a wife/mother/grandmother making you dinner was far more common in the past than it is now. I'd probably guess that more people know how to cook and cook their own food today, than at just about any other time in history
These are all just spinning food products around or on a heat source, sounds like we could just abstract and reuse that module without coding up a behavior for each 'new' cooking technique.
And if we want to talk history, having food made for you by other rather than making it yourself is not a new thing. Having a servant or a wife/mother/grandmother making you dinner was far more common in the past than it is now. I'd probably guess that more people know how to cook and cook their own food today, than at just about any other time in history