You're folding it wrong.
Watching the fold test these devices underwent to demonstrate the 100K fold cycles, I noticed that the devices under test were being firmly held at 6 points (all 4 corners and the middle of each side). Funny thing is we don't have suction cups on our fingers, so the average numpty is probably opening this thing with one thumb in the middle and the other at the bottom, which is going to put twisting forces on both the screen and hinges.