What does Finny explain serves as a tribute to the school's role in the war effort?

Finny explains that the school's "Super Suicide Society of the Summer Session" serves as a tribute to the war effort by embodying the spirit of camaraderie and adventure that is essential during times of conflict. He believes that the society reflects the values of bravery and unity, which are crucial in supporting the troops. Additionally, the society's name itself playfully acknowledges the seriousness of war while emphasizing the importance of youth and vitality in facing such challenges.