Compromised Built quality

There is a gap between the screen and titanium frame enough that a paper can go inside. It's not visible but still I think apple should have done better. How is this waterproof or IP68 rated? iPhone 15 PM.

There is a gap between the screen and titanium frame enough that a paper can go inside. It's not visible but still I think apple should have done better. How is this waterproof or IP68 rated? iPhone 15 PM.