If you want some insight into the group behavior I am referring to, I suggest reading "Predictably Irrational" by Dan Areily and/or "The Science of Fear: How the Culture of Fear Manipulates Your Brain" by Daniel Gardner.
To summarize, people tend to like people that enjoy the same things they do. Be it Disney, iPhones, a sports team, what have you. The more people that join that group, and the more people talk about that enjoyment, the more people of that group think that they are correct, and all others are false.
This is not "being brainwashed", this is merely how our brains work. It's hard wired into our systems, which may have been beneficial in cave man times, but may cause issues in modern day life.
Marketers are extremely aware of this effect. I spoke with Guy Kawasaki about this a couple months ago when he was visiting in Toronto.
"In 1995 I returned to Apple as an Apple fellow. At the time, according to the pundits, Apple was supposed to die again. (Apple should have died about ten times in the past twenty years according to the pundits.) My job on this tour of duty was to maintain and rejuvenate the Macintosh cult." (an excerpt from his bio page from his web site).
Again, this is not brought up to say that anyone liking an iPhone (or Disney for that matter) has been brainwashed, or that the iPhone (or Disney) is horrific, it's just an observation if you are looking for an unbiased opinion on either topic (in the OP case the iPhone) that this particular group of people may not be your best choice.