I don’t think most people are upset about the update itself. They’re just reacting to the mismatch between the scale of the improvements and the scale of the marketing.
To be fair apple didn't even market this launch, it was a very quiet release, but the reviewers needed to make content, so here we are.
That's not to say that they generally aren't guilty of making massive fanfare about ridiculously incremental phone updates and swapping the location of the camera bump just to make it look different.
