What is the world would waiting a month have done? The iPhone 6 would have been the iPhone 6. These phones are made long before they are released. A month would have done nothing. If you really don't like what Apple did. You need to wait until the iPhone 7 is released.
Being as several key features of iOS 8 weren't ready at launch, waiting a month could have had the hardware release match the software release.
When several key features of keynote (Apple Pay, Health, iCloud Camera Roll) aren't available on until a month after release....your hardware was released to early.
Apple gets a free pass on it because we all love Apple. But iOS was definitely behind schedule.