Most people's first concerns will be for the pilot, his family, the instructor and the immediate fraternity.
Then, inevitably, those with a vested interest will want to seek clarity on the cause, to understand why it happened and what might have pevented it. Of course one would hope the AAIB report will be conclusive, but this could take months.
In the meantime, there will be speculation and conjecture, and it again raises questions about helicopter safety and, specifically, the Robinsons' record. Once we have clarification we will be in a better position to judge.