People have already mentioned testing and abstraction, but what about other developers and security?
Spaghetti code all you like in solo projects. But if someone else is coming along to debug a problem in their toppings, why would you make them remember anything about baking or the box when it’s completely irrelevant?
And why should the Box object be able to access anything about the Oven’s functionality or properties? Enjoy your oven fire and spam orders when someone works out they can trigger the bake function or access an Order’s payment details from a security hole in the Box object implementation.
It’s not just about readability as a narrative, even if that feels intuitive. It’s also about memory management, collaboration and security.
GNU+Linux user just wonders whether medical technology is bad for humanity’s long term survival because hereditary diseases can be survived and spread, but wouldn’t want anyone to misunderstand.
It’s nice to know we have looped back to the point in history where we casually consider which people should have agency over their reproductive rights. Oh wait, no it’s not nice at all, but somehow still totally acceptable and commonplace.