The trigger safety on a Glock is not a drop safety. A plastic trigger attempting to overcome three metal springs will in no way generate enough inertia to complete the firing cycle if if the pistol is dropped on the back of the slide from Mars . . . Glock's drop safety is an entirely different mechanism.
Do you not understand shawn mccarver's earlier explanation?
Or do you not believe Glock's statement (see "Safe Action" tab):
The trigger safety is designed to protect against firing if the pistol is dropped or the trigger is subjected to lateral pressure.