As far as a contrarian article, I cannot find one. The NPS wont release any of their numbers for missing persons within their parks, so the only information people have to go on is found in individual cases. Some of these cases date back to the 1800s, why won't the NPS cooperate with any of the research?
Within each disappearance, why the strange similarities? And it isn't small numbers of people, it's a good percentage of people who go missing.
They went missing feet away from their companions. They had no clothes when they were found. Their shoes were never found. They were found miles away from any rational place they should be found, often up a mountain. There is almost never any sign of sexual abuse (I think there was only one body that was raped after the person was dead). The people aren't eaten. The people are often intact, at most some scratches. Why would so many children leave their family, swim across a river, take off their clothes at some point, then hike up a peak within a few hours? Why won't dogs pick up their scents? The people who are found alive are either too feeble or too young to really describe what happened.
It's not like some small percentage of the cases follow this pattern. It's a crazy high percentage, enough to set a trend; however, it's hard to come up with an exact percentage since the NPS won't help with any information.