Couldn’t they also just legally request a route and land on an official airport (no matter the exact size) with a few people on board as a sort of “VIP” flight and then just smuggle the drugs out of the plane/airport?

It wouldn’t be the first nor last time someone in a harbor or airport was bribed to “misplace” some cargo they handled/saw/whatever.

Except you already have that update installed, the box is not checked and the entry is still respected, nobody could possibly tell you why because that’s not how it’s supposed to work and everyone else works as stated! And now you have to live with the knowledge that your system is in some unobserved quantum superposition with a critical fix in place which may stop working at any moment for any reason and nobody can tell you how you even managed to get into this situation…