It would be helpful if Zekeiah could stay. Mr. Zorro figured that he would need Zekeiah's help for his retreat as well as a safe house if he succeeded.
Therefore Mr. Zorro did not want Zekeiah to leave.
However, it was not the time to be stubborn.
He could clearly see the situation they were in and distinguish the importance of the matter.
First of all, he could not leave.
One, he was the only one who was able to take Biden away from the FBI.
Second, he did not want Zekeiah to stay