Visible crew/equipment: When Samuel L Jackson is talking to Carter about the diving mask, a light screen is reflected in his glasses. (00:15:10)
Visible crew/equipment: After Preacher says "Feeding time" and the camera moves toward the window, you can see the camera's shadow down in the left corner of the screen. (00:16:55)
Visible crew/equipment: As Carter is swimming in the cage under water there is a frontal view of him where you can see the shadow of the camera moving down in the right corner of the screen. (00:24:45)
Visible crew/equipment: As Preacher and his parrot are about to go up the stairs to a higher level, you can see a wire attached to the parrot. (00:43:05)
Visible crew/equipment: When Preacher's bird flies off, you can see the shadow of someone at the far end of the corridor on the floor. Since no-one else is around, this has to be the trainers shadow to whom the bird flies. (00:43:10)
Visible crew/equipment: When Preacher falls off the shelving rack into the the water after his bird was eaten by the shark, you can clearly make out the zip for his wetsuit under his jacket. (00:52:00)
Answer: They viewed her as a villain because it was her research that backfired and caused all of the chaos, even though none of it was intentional and it was a mistake. But audiences can be ruthless and unforgiving at times. However, the ending did feel like a cheap cop-out that created more plot holes. And many do feel she should have survived and completed her character arc. I don't know why they never offered the ending as a bonus feature on the DVD, but fans started a petition on the Change site calling for Warner to release the original ending. Thomas Jane is on board as well, as he's promoting it on his Instagram account. So that's probably the best way to get Warner's attention if you want to see the original ending.