The DA said there was too little evidence to convict beyond a reasonable doubt, not that no crime had been committed.  And that was because of LCSO's sloppy administration about his actual duties.  

But she did find 'Probable Cause' that both Theft and Official Misconduct had been committed.  

Ethics are only as  'subjective' as your own personal moral values.   

Many of the rest of us are doing just fine, I believe.