Re: It doesn't happen on the Samsung Galaxy Notes
I'm sure many many people will have a 6 Plus and never have this problem, so the fact you didn't have the problem with a Note wouldn't mean on its own that it can't happen to others - or at least that it isn't a problem with other phones. Google HTC m8 bent for instance. Apple gets a bunch of negative publicity about some issue that affects a small minority of people with every iPhone release. Remember "Antenna Gate" on the 4, the "yellow screen" on the 4S, the purple tinged photos on the 5, and I'm sure there was something on the 5S I'm not remembering.
Hate to sound like "you're holding it wrong", but people will have to decide not to keep the 6 Plus in the back pocket of their pants or a front pocket of overly snug jeans and then sit down. From the video of the guy who bent the 6 Plus with his hands trying the same with a Note 3, it "bends", but doesn't stay bent. Since circuit boards and glass screens aren't meant to bend, you might still have problems putting that into a tight pocket. It won't stay bent, but repeated bending and holding a bent position while sitting are not good for electronics and could eventually damage it. People wouldn't necessarily attribute it to bending when it stopped working or the screen broke.