I think people have a right to feel upset, it's something they wanted and they didn't get it. Why is that hard to understand? Whether they should be upset about a material possession is a conversation for a different forum.
There seems to be confusion. I'm speaking to the folks who were never promised a phone on launch day and are upset that their phone didn't come in. Folks can certainly be upset that their phone isn't here yet, but if you were given a ship date in October did you (general you) realistically think you were getting your phone on launch day? Wishful thinking is one thing but you have to be realistic.