I too have tried to bend a demo model in store. Well, not actually "bend" it, but see how much force I had to apply before it felt like it would actually do something. And yeah, it was way, WAY more than it would experience simply sitting in my jeans pocket as I stand, walk, sit down or rise from my chair. It would take something like leaning against the edge of a firm surface directly on the phone itself in your pocket. Way more than it would reasonably experience in day-to-day use. And that would bend or otherwise damage any smartphone we've ever had in our house. Sorry, but I just couldn't see it experiencing that much pressure in a normal person's jean pocket, even if they were tight as ****.
And like other's have stated, it is indeed awfully suspicious that a supposedly wide-spread problem consists of the same few photos being posted over and over again. This really is starting to sound more like the 5s/5 issues of people bending their phones through some sort of act or accident, and then trying to pretend it was simply just sitting in their pocket and "I din do nuffin it was just in my front pocket when I sat down!"