So what’s it all add up to? It’s hard to say. But me, I’d say this was a test…for Sam and Dean. And I think they did all right. Up against, Good, Evil, angels, devils, Destiny, and God himself, they made their own choice. They chose family. And, well…isn’t that kinda the whole point? No doubt - endings are hard. But then again…nothing ever really ends, does it?
I kinda hope the cult ending is just an Easter egg and not actually canon caus I like joseph, and the idea of him being this evil cult leader kinda makes me physically sick.
A lot of people are thinking the same thing as you. It looks like there might be a bug preventing you from getting Joseph’s good ending, and I assume that the cult ending is a standalone thing? The cult symbols really do look like ship steering wheels, Robert and Joseph probably just had a rocky past—Rob’s “Johnnyboy” could’ve been Joseph, and they could have matching tattoos—and I highly doubt there’s a room underneath the cul de sac dedicated to blood sacrifices.
Don’t get me wrong, I like the cult ending and overall plot twist, but I’m not a fan of Joseph being a completely undatable sentient garbage can. Hopefully, the good route will be debugged and we’ll have a satisfying ending. With Mary and Joseph getting a divorce, her getting help for her alcoholism, the kids not being effected by the split, and, y'know, Joseph not being a crazy fucking nutjob.