The dead at least can’t alter their activity to help more or reduce harm, the living can.
It’s the other way around: in timeless view, nether living not dead can “alter” anything, the relevant fact is that you can influence activity of the living, but not of the dead (not as you said whether the dead themselves can alter things vs. the living can alter things).
It’s the other way around: in timeless view, nether living not dead can “alter” anything, the relevant fact is that you can influence activity of the living, but not of the dead (not as you said whether the dead themselves can alter things vs. the living can alter things).