It's slightly taller than other phones but not massively bigger than phones like the Note or Oneplusone.
The problem is in the design they used one large piece of soft malleable metal for the back with no reinforcement inside. Every other big phone has some sort of framework inside for the back or uses several smaller pieces for better structural strength. That's a design fault, people put phones in their pockets and a company releasing a phone no matter the size should be aware of that.
The "Guy" in the video does this with all phones it's part of a series of testing he does, he has done it with many big phones only the 6+ had such drastic bending.
Man it's so bizarre how people treat multinational corporations like religions these days.
If a TV company put out a TV that broke if you sat in front of it no one would be making excuses, if a cable company put out an update that stopped you being able to watch TV no one would make excuses for them. The opposite would be true there would be a massive stink and everyone would condemn them but no with Apple the cultists come out.
Dang twice today I been called fanboy, Apple religious,etc. LOL Just boggles me that this day and time someone can buy HOT coffee from a fast food place, spill it and its the restaurants fault. Or take an electronic device, NOT use the cases that are made to carry them on a belt or where ever, choose to shove them into a pocket and when they bend blame the company that made the device. No where is it recommended or stated that its ok carry phones in your pocket. And common since would dictate that the larger the device the more likely the chance of damage. Thin, lightweight, aluminum devices are going to bend if subjected to pressure. That is simple physics. Yet its a "design flaw". We demand giant screen but thin and lightweight then complain when they bend easier than the old steel phones we used to carry.
On a side note, notice how times have changed? We had giant cell phones way back with the huge antennas, wanted them smaller and smaller, now we are wanting them bigger and bigger again. Wonder how many people put those huge, 1st, way back, when cell phones in their pockets and complained when they broke? hmmm how did they carry those things around anyway?