I'm watching very closely at the issue, that with iTunes I was able to sync files to iphone/ipod/ipad and SEE THE PROGRESS BAR. Since iTunes was discontinued and we were forced to use Finder for the same task - you no longer see any progress bar when syncing files to one of the apps on your device.
From 0 to 10, what would HN rate this UX mistake?
Here is a thread on Apple forums: https://developer.apple.com/forums/thread/130051
Here is Apple's official guidelines: https://developer.apple.com/design/human-interface-guideline...
"Don’t make people sit around staring at a static screen waiting for your app to load content or perform lengthy data processing operations. Use progress indicators to let people know your app hasn't stalled and to give them some idea of how long they’ll be waiting."
Go figure.