"Any technology, sufficiently advanced, is indistinguishable from magic." Arthur C. Clarke's third Law.
If you cannot see the advancement in a keyboard in which the key caps can dynamically change, in color, appearance, and function, to the needs of the apps that are running, or the entire keyboard can suddenly become a multitouch trackpad, then I can't help you see it and the advantages it offers.
Clarke’s point is that there is no such thing as “magic”, unless by that term one is referring to show business stage trickery, or advertising hype.
Personally, I dislike that term, but it works well to impress the ignorant.
And as for Apple’s so-called Magic Keyboard, the concept of entry devices modifiable under software control for function and appearance is a decades-old concept, though obviously it’s much more practical, effective, and cheaper to implement with current technology using electronics rather than optics (as was done half a century ago).
But I’m glad they are doing it, and you are dishonest in accusing me of not seeing the advantages of that approach.
Now if Apple would design and program their Magic Keyboard to be comfortable in an ergonomic sense for someone like myself who tends to type a lot, then they will really get my attention.