First, I'm somewhat familiar with Fort dogma. And I agree with you - their focus is absolutely on protecting/preserving the Light in all ways. That also includes themselves.

Forcing someone good to feel guilt for someone else's actions is NOT preserving the Light. It is weakening it. Preserving the light would be building up that individual, rather than making them feel worse about themselves.

Again, I'm not advocating that Goods (or especially Forties) should be allowed to kill goodies at will. I'm mostly talking about those times where someone else's actions directly caused it.