I take it people didn't read the months of reviews, videos and photos already taken before they were complaining, instead leaving to have a moan at apple and submit or not submit feedback AFTER beta is over?
I didn't. You can't really tell how the OS will appear in use by looking at videos and photos of it. Also, it takes time to get used to things before formulating a stable opinion. Some things I initially hated and now I'm OK with them.
You are suggesting that people should not submit feedback after a product is released. I don't think I've ever heard anyone else suggest that. Perhaps you're just trolling for a reaction since it's such a bizarre point of view.