Du You had no choice, it wasn't his fault he was different from the others. The others, due to their incomplete skills or considerations of safety, hardly ever acted alone and usually formed teams.
Whether it be a large force or a small squad, they were always in groups, resulting in a suppressed drop rate. Their primary method of obtaining Crystal Coins and personal equipment was through completing quests. This is why their earnings were always quite meager and they always found themselves scheming ways to hunt for additional tasks.
Du You, on the other hand, always acted alone. His two followers were included in his count, so as per the rules, the three of them were regarded as one entity. Du You rarely teamed up with others.
Likewise, Du You usually chose to slaughter enemies of the same rank, or even those with higher levels, utilising this method to obtain high drop rates. Only specific people with high skill investments like Du You could consider employing such a method.
