This is a separate issue from the one about stored energy in the striker spring.THEREFORE, an aftermarket get like Apex that removes travel actually isn't making the changing the drop safety or sear/firing pin block both fail issue?
If there is enough reduction in trigger travel, the internal passive safeties may be disabled. This is a problem because those are there to prevent things like inertia operation of the mechanism. As in, when the gun is dropped, inertia can operate on the parts of the mechanism and result in the same kind of force being applied to the fire control parts as if the trigger were pressed normally. The passive safeties prevent that, but if they are disabled then they can't do their job.