He thought it was very likely the case.
The judges would not go to the Sin Snatching Territory in the past.
It was only after hearing the news of the Child of Eden from the Chameleon Deity that the judge finally rushed to the Sin Snatching Territory, and even then, he brought the entire Sacred Mountain with him.
The reason for such caution might have been that the Sin Snatching Territory harbored an existence that not even the judge dared to provoke.
In its lifetime, the Nether Phoenix was the master of the Spiritual Purgatory. Therefore, even after its death, the Spiritual Purgatory might slowly dissipate but would not be completely destroyed so quickly.
If the Spiritual Purgatory still exists, then despite being dead, the Nether Phoenix is still its master in a sense.
"What sustains the Spiritual Purgatory?"
[Naturally, it's life force, by absorbing the life force of others.]
