The US FAA sets up a situation for problems when it defines IMC/VMC using Cloud Height and Visibility alone for that in our FAR Part 91. Example is the JFK Jr Fatal Crash where Night VFR for Non-Commerical operations requires no surface or celestial lighting to maintain control of the aircraft yet for Commercial Operations under FAR Part 135 it does specify surface lighting sufficient to control the aircraft.
That US EMS Helicopter Operators routinely ignore that requirement never sees enforcement action by the FAA.
Regulation....Fail
Enforcement....Fail
Training.....Fail
SOP's Operator Procedures.....Fail
Judgement.....Fail
All the Holes line up neatly far too often as a result as some of them are quite large thus facilitating the smaller ones a lot of room to line up.