Cutting the latch down is more likely safer than raising the seat.
If I fully understand what is happening here (I haven't taken my truck apart) there is a finger on the back of the seat about 2" long that hooks over a rod on the back wall of the truck. When you lift up the seat bottom the back also lifts about 1", normally you are moving to the middle of the 2" long bracket. Now when space the seat up an inch, then you lift the seat bottom, which raises the back, you now can just clear the finger.
The weakness comes from adding an inch of leverage on the finger, which normally is going to have no leverage. So you would be running a greater risk of straightening out or breaking the back that in the OEM configuration. Where is stock position, but cut down the leverage would not change.
The reality is, if the passengers are wearing their seat belts, they are attach the cab, not the seat. So a properly restrained occupant is at no greater risk than originally.