it's very unlikely something like this would have happened had the operation been conducted with a multi-pilot, IFR capable twin.
The catch word there tottigol is "capable". One operator flies IFR capable machinery, but pilots, should they legally file IFR, will be in for a reprimand. It happened. So focused on budget are management, that incurring costs by way of air service charges for IFR are a no no. It's a VFR operation nominally, but the OPs post could easily be one of their pax.