"Something has hit it and that something is pretty heavy, the windscreen is 4-5mm thick and it has imploded," McChesney said
I think that is a big stretch.
"He said there were often drones in the area the plane was, as the large open pit mine was a popular spot to photograph. "I would says there's a drone up there every day at some time.""
Probably operating legally then - but why were you in the area you knew they were?
Although he did not see what caused the windscreen to shatter, he suspected it might have been a drone after discounting the possibility it could have been caused by a bird strike - there were no feathers or blood - or a shot from a high-velocity rifle.
Only because Bob Jones was found unarmed on the South Island.
If drones need more regulation fine but if this is the evidence for extra regulation, it is pretty poor infact more regulation seems required for the pilot IMOP.