The compass test is a bit of a joke, i agree and more due diligence must be done on the behalf of management to ensure that the selection process is stringent but none of this changes the fact that results have been accomplished through the program candidates have finished their line training and are now employed with Air Arabia.
Being a former flight instructor and examiner my self I realize that students learn at a different pace but sometimes you just have to make the call that someone is not cut out for this sort of program (that cant always be foreseen in a compass/psychometric test).
Focus on your type rating and line training material, dont occupy your mind with what happened in the past. This is aviation. Operators/Flight Training Units/Regulators all have major screw ups, we learn, laugh and eventually move on trying to make a positive change. Constant complaining about it doesn't it solve the problem.