If you have ever worked in aircraft development and certification you would know nothing is ever simple, rapid, or “clear cut”. Read and learn, all that post simplistic responses on both sides of this discussion.
https://www.ntsb.gov/_layouts/ntsb.a...06X42741&key=1
Very much on board with all that.
However, it does seem to me that the 525 was cruising to certification when this accident happened. The inquiry has resulted in a material certification delay, rather unexpected had the cause been as obviously pilot error as was suggested above,