All these visualizations successfully fragment the film's sense of reality, making said reality that much harder to find. Hoax or horror? Is the movie about arrogant kids who can't cope with nature; or about kids attacked by a force of the supernatural?
In other words, technology wasn't helping in the quest for answers. We had at the end of the 1990s (and now as well...) more science and technology at our disposal than ever before in the history of our species and yet we couldn't agree even on the most basic facts, let alone the interpretation of those facts. As a nation, we devoted more hours and more words to the Monica Lewinsky affair than any event in modern history up to that point, yet we remained divided about what it was all about, why it mattered, and what it represented.
For every such claim of "authenticity" you must now bring your experience, skepticism and technological know-how. Was the video a special effect? A green screen? A matte? Photo-shopped? Very cunningly staged?