Question about souls, gods and Roy

[Fyraltari]

Not even, the gods don't absorb the energy of the planes, they absorb passive worship that the soul emits during its time in the afterlife.

You might want to tell to Thor and Durkon:

Thor: Plants absorb sunlight, animals eat plant, people eat animals, other people defeat them and gain levels. Then the worms eat everyone.
Durkon: An' tha Gods skim tha souls off tha top. Tha more levels, tha better the souls.
Thor: Pretty much. We don't keep making these worlds for fun.
Durkon: Then Redcloak's right. 'E's food fer us an we're food fer ye. Tha world's a big ol' soul farm.
Thor: Ok: see again, that's unnecessarily pejorative.

He then goes on to describe how goblins weren't purposefully put in the position of "food" for PC.

It remains true that the souls don't endure forevermore in the afterlives and that it is the souls being absorbed by them that allows the Planes to sustain the gods. The souls are food for the gods. Or fuel. Or any other metaphor you want.