There are comments that the test was an overkill, but it’s not. This is to simulate time. Sure, that’s a lot of dust, but I’m willing to bet it is close to the amount your phone will see in a year or two.
This test is meant to be a bit of an overkill to see a few things: Does the dust get in? How much gets in? Where does it get in? How far in does it go? This was a perfect test.
I’m willing to bet that after a year in a pocket, you’ll start hearing the hinges grind when opening and closing the phone.
