I bet there is an added layer of regulations for Angel Flights because some idiot exceeded his skills and his confidence by flying into IMC.
CASA are trying to regulate against stupidity. And because pilots keep on doing stupid things (like flying into IMC when not trained or qualified) then CASA will always have a reason to tighten the noose.
The pilot in command failed to act responsibily, safely, or even within his (limited) competency.
And we will all have to suffer increased regulations and oversight as a result.