All your "reasons" are 100% byproducts of having the phablet option.
Putting reasons in quotation marks doesn't mean they're not reasons. They are literally reasons people consider and purchase the iPhone 6 Plus. I myself purchased the 6 Plus for the camera's OIS. Your argument that people literally only consider the 6 Plus for the screen size is invalid.
But anyways, with that being said and with your incredibly biased argument being invalid, I'm done with you. So be as upset about this as you choose to be.