That is one man's hypothesis, and by his OWN ADMISSION, he is purely basing his HYPOTHESIS off of pictures. He has NOT handled the phone, or inspected the chassis first hand. He even admits he is guessing at diagrams A & B, and I am still unclear by what his point is regarding those points.
I can see how the breaks in the reinforcements could be a weak point, BUT, those breaks repeat along the longitudinal edges of the phone.
MOST INTERESTING: there is the same break near the middle of the phone where both Apple and Consumer reports applied their force (a force applied with a thin bar with 90 degree edges, which is much more likely to bend compared to a soft thumb).
IF the breaks in the reinforcements are the cause, the Apple and CR tests would much more likely cause a bend in the middle of the phone as well.
This "online investigation" should NOT be given more credence than the scientific and objective testing two REPUTABLE companies have done. You are taking the word of one man who stands to profit from his bend videos, and one man's own ADMITTED speculation.
Stop being ridiculous. Is it possible his theory is right? Possibly, but at least some portions are poorly explained, and it is in no way verified to be dispositive (even by his own admission).
Remember how reddit thought they found the Boston Marathon bombers through their "online investigation"? Yeah. Stop.
It is a theory at this point. Nothing else.