The order to evacuate could not be issued easily, especially at such a juncture where disaster had struck. After all, it wasn't as simple as herding sheep, because human nature was very difficult to control. The evilness of human nature tended to be revealed during times of crisis and disasters. If the people on Four Seasons Island were to evacuate now, God knew how chaotic the island would become. The chaos alone would be considered a huge disaster.
If the magic scroll turned out to be useful and effective in chasing Wild Whale Rabu away, Bradlor would still end up with a huge mess to clear on Four Seasons Island. Not only would it cause the Gilded Kingdom to suffer huge economic losses, there would also be a huge blow to the kingdom's reputation. After all, at this point, the people of the Gilded Kingdom were not the only ones on Four Seasons Island, there were also representatives of other forces.