Dilan had never forced anyone to stay with them. That was why he didn't feel bothered when the traumatized Ascenders left them.
If they couldn't even endure some gazes of contempt, it was wrong of Dilan to think that they were worthy of being nurtured either way.
Those who fled from a battle were not worthy of being called Warriors, to begin with.
The Ascenders, who decided to run away after making a mistake, were not welcome in his group. It was best for them to leave because that meant they wouldn't try to fix their mistakes either way.
Almost all Ascenders thought that they led Dilan down, that they didn't meet his requirements, and that they were a burden to him.
There were many Ascenders who were trying to fix their mistakes, to become better persons, make up for the bad traits of their personalities, and to allow others to help them.