User blog comment:MarkManeMcIntyre/Some one fixed Michael. It says he's the second when he is the first./@comment-109.193.194.90-20160512202753

They retconned many things. The whole season 5 plot doesn't look so significant any longer. As God said, that Sam, Dean and a number of other humans are some sort of balance between Light&Dark and that he saved them back in season 5, it came to me that it was always God's intention to let Amara out. None of the things that happened prior to season 11 seem to matter any longer. Have a problem with Lilith/ Azazel/ Lucifer ? You lucky guys, you only have to find: Cain to get the mark, than find the Book of the Damned and Rowena to remove it and let the Darkness out - she will take care of the rest. Okay, the spell requiered some rare ingredients, but still - it's even easier to release Amara than it is to release Lucifer. None of the things prior to when Henry Winchester arrived were of any significance. The Darkness would eventually break free. That's a heavy retcon.