Probably because it happened to a village of 200 people in the relative middle of nowhere.
Remember the Flint water crisis? That was a population-dense city, with multiple school districts all being poisoned by lead and legionnaires disease. Nobody cared about it until it was turned into a political negligence story, then it was all you could see on Fox and CNN...
People just don't really care about this stuff. It's novel from a social media perspective (black plume of smoke occludes forested midwestern town!) but it's not like the media has any shortage of humanitarian crises to report on.