User blog comment:IamJakuhoRaikoben/Chapter 384: Attack of the Stars, Review./@comment-7418318-20140516181840/@comment-24066070-20140516205156

Perhaps it was due to arrogance, since he thought Lucy was at their mercy and therefore the "mission" was already accomplished. On top of that, he may consider himself to be above the dirty work of cleaning up the "insect"