One important aspect to me seems to be that (due to the time the complaint was made) the band could not be investigated when it was in session. Witnessing the entire organization in action for a few months as opposed to when it is not even running would give a much better picture of how things were going, and how the culture was. It's pretty important to be involved or embedded in a group for a significant time before you make a sweeping declaration about a culture problem.
And on a separate note, the Dispatch has done a very poor job of balanced reporting on this entire ordeal. It has flipped to flat-out muckraking in a lot of ways. There are a ton of testimonials coming from other news outlets that at least depict some other stories and experiences in the band as opposed to taking off with a single narrative and assuming the absolute worst.