That's a big call without knowing any of the facts.
The facts are there were two helicopters that collided conducting scenics on a clear day. Read the whole post. What had worked before clearly and factually did not work on the day. Go and get a copy of James Reason's book and you might understand that there are very few genuine accidents. Someone has changed what was done successfully before to change the dynamics of an operation where a collision occurred. This collision didn't happen because the pilots were no good at their job or the helicopters were not fit for purpose.