How many iPhone 6+'s have been sold ?
What proportion have had issues in comparison? Answer = a very very tiny minority.
Indeed I'd argue many of the iPhone bending reports were either bogus or people purposely bending iPhones after the whole 'bendgate' fabrication (unbox-therapy successfully manufactured a scandal for youtube revenue ) . Indeed it was shown after that many other phones also bend when you put them under the same stress.
This silliness of bending is thrown out every time someone wants to have a dig at the iPhone, usually by very insecure or over sensitive Android users, and at this stage it's so passé its tiresome...
Well ill put it this way, the majority of people i know at work that have a 6+ have the issue with their device. Either the people at my work are all very unlucky or there is actually an issue with the design of the phone. You can defend Apple all you like but the problem exists. I own many Apple products but im not going to blindly defend them when they release sub-par hardware.