I’ve seen a lot of people talking about how Cas’s TV escapism feels familiar and how they can relate to it, I know I certainly do. The reason YANA was even created in the first place was to help those in the fandom who suffer from depression, anxiety etc., many of which use Supernatural, and the fandom community it brings, to get through whatever they are fighting by supporting each other. At this point, the entire cast and crew know about the boy’s efforts with AKF and YANA, so I can’t believe that Casifer’s story is just a coincidence. If it was, why make TV be the thing Cas uses as escapism? It parallels too closely with the campaigns and with the fans. That’s why I believe that Supernatural is trying to send us a message through Castiel’s story: that if you always keep fighting and supporting each other through the hard times, even if you feel like you can’t fight anymore, you will realize you are not alone and pull through. I think the message would be too personal,  dark, and counterproductive to the nature of those campaigns if they let Cas die this season. Not to mention, as someone else pointed out- in last night’s episode, where we finally got to see what Cas is doing in his mind, there was a shot of a building that said ‘AKF’.