No one does not want to hear good words directed towards them.
If the actions of the three bad students were to lower the moral standards of others to legitimize what they had done, then Kain's words raised everyone's moral standards.
When everyone was as noble and brave as true warriors and knights. A cowardly and shameful existence like those three bad students was no different from real trash.
Compared to having to wear the ugly clothes that the three bad students had painted on them, the other students wanted something more beautiful and honorable to cover themselves. Even if they weren't really that noble, they wouldn't refuse it.
This is a sweet trap that no one can refuse.
So what can Kain gain from this.
Of course it is the silent manipulation of other people's emotions.
By taking advantage of other people's morality.
There are two ways to use the above method.