It's more like: It is lost knowledge that these kind of gradients look garish and went out of fashion when we figured out how to make more subtle gradients. Thi

It's more like: It is lost knowledge that these kind of gradients look garish and went out of fashion when we figured out how to make more subtle gradients. This is basically "programmer art". I think the lost knowledge is also for example how to make the corners less harsh, and how to add a certain physicality to the buttons.