Erimgard said:
It was the Dark World in OoT without a wish.
It was purified in between OoT and aLttP.
It became the Dark World again with a wish when Ganon entered again.
No contradiction.
Uh, what? There's no reason it would be the Dark World in OoT. Ganondorf kind of just stepped in there, took the Triforce of Power, which gave him the means to conquer Hyrule, and left to actually do said conquering. He never made the wish to make the SR the DW.
There's nothing saying the Dark World was purified, anywhere, and furthermore there's no proof that there even was a Dark World to purify before the Seal War. It was the Sacred Realm, watched over by the Triforce and the Goddesses. It was
not a hive of evil from which poured a swarm of enemies.
When Ganon entered again and wished on the Triforce, it became the Dark World
for the first time, and so evil showed up in there so that it could pour out in the first place, necessitating the Seal War. Your argument is basically based on the unfounded assumption that there was evil in the SR before Ganon entered the second time, whereas DL01 is using ingame quotes to establish a theory based on things that we know happened.
One question I still have, though is why his wish worked the second time- I highly doubt that Ganon somehow obtained a balance of courage and wisdom before entering the SR the second time. He was still an evil power-hungry despot, so shouldn't the Triforce have split up again? Why would the Triforce let him transform the SR, anyway? Why would anything do so, if the Triforce only allows wishes from people with a balance of wisdom?