User blog comment:SeraphLucifer/Discussion/@comment-3481504-20151025043959/@comment-9249716-20151030053648

But then why should anyone trust the Darkness' word just because it said so? If the darkness is so powerful, how would it be sealed away by beings supposedly less powerful than it?

That's why I say the way they executed this idea was sloppy and inconsistent. DC and Marvel kept up the idea of him being all powerful because it was the only thing that would make sense even with how crazy their plots in their respective universes can get.

And as I said in my own blog post, the current writers of Supernatural are copying this idea from other writers or unverses who executed this idea already.