These are almost so plain looking they stand out. I wonder if that's what they were going for, since they could've easily stuck an apple logo in all that empty space.
I'm sure this will go like any other apple product release - the internet will make fun of it but in real life it successfully becomes a fashion statement.
Maybe I'm missing something obvious, but I can't think of a reason for scrollbars to exist in the first place. You always have a physical way to scroll. If a user doesn't know how to scroll, it's a problem with the device, not your software. The only purpose of the scroll bar is to show your current position in the page, which doesn't require persistence.