Zon-Kuthon is now SEALED, meaning that ASMODEUS's work is now OVER.  OTOLMENS, on the other hand, continues to be responsible for monitoring or containing 2,885 other active existential threats, which you do not see Her being 'tired' about.

There is now nothing preventing Asmodeus from instructing Asmodeus-obeying mortals to move the anomaly back to the containment zone; where Zon-Kuthon will not be able to attack it again, since Zon-Kuthon is now sealed.

Therefore Asmodeus's reasoning, however valid it may have been YESTERDAY, is currently NOT VALID and Asmodeus should instruct His mortals to move the anomaly back to the designated anomaly containment zone.

Zon-Kuthon is now SEALED, meaning that ASMODEUS's work is now OVER.  OTOLMENS, on the other hand, continues to be responsible for monitoring or containing 2,885 other active existential threats, which you do not see Her being 'tired' about.

There is now nothing preventing Asmodeus from giving instructions to Asmodeus-obeying mortals, such as, for example, instructions to move the anomaly back to the containment zone.  Where Zon-Kuthon will not be able to attack it again, since Zon-Kuthon is now sealed.

Therefore Asmodeus's reasoning, however valid it may have been YESTERDAY, is currently NOT VALID and Asmodeus should instruct His mortals to move the anomaly back to the designated anomaly containment zone.