I received my iPhone 4, 5, 6, 6S, and 7 on launch day. All preordered.
Did in-store pickup for the 6S and 7 thanks to the Apple Upgrade Program.
I’ve never *not* received an iPhone on day one.
I GUARANTEE the number of folks preordering and get it at launch are a much smaller percentage than folks that don’t. Just browse previous posts from prior years.
Just sayin.