No one cares. Most people don't use the USB cable to transfer to their iPhone anyways, because it automatically backs up to iCloud every day wirelessly, and there really isn't any reason to transfer data to an iPhone via cable.
The few random people who do are probably videographers looking to transfer their large video files and buying the pro models anyways.
Even android users probably aren't paying attention to what speed their USB was.
I'm shocked that is even a selling point. I've been using an iPhone and iPad for about 8 years and never transferred data this way. I've only used usb for midi or keyboard inputs where data speed was not a factor.
The few random people who do are probably videographers looking to transfer their large video files and buying the pro models anyways.
Even android users probably aren't paying attention to what speed their USB was.
I'm shocked that is even a selling point. I've been using an iPhone and iPad for about 8 years and never transferred data this way. I've only used usb for midi or keyboard inputs where data speed was not a factor.