I'm right with you, the grandparent is insane. Flat out.
I love reading quotes like that that are backed with, you guessed it, absolutely nothing.
Pinch to zoom is a great example. It may not be your first guess but it's the type of thing that you do a couple times then look back thinking, Wow! that's a great way of representing zoom on a device capable of listening to multiple inputs at a time. And subsequently will never forget how to do it, and it becomes your first tool when you want to zoom.
I love reading quotes like that that are backed with, you guessed it, absolutely nothing.
Pinch to zoom is a great example. It may not be your first guess but it's the type of thing that you do a couple times then look back thinking, Wow! that's a great way of representing zoom on a device capable of listening to multiple inputs at a time. And subsequently will never forget how to do it, and it becomes your first tool when you want to zoom.