User blog comment:Touchinos/“Proverbs 17:3” Discussion/@comment-1031724-20191116044240/@comment-10889355-20191116070647

I'm sure they'll find a way. It may not look like that right now but they still have Billie, The Shadow and Jack (the three remaining powerful beings in existence). Alex Calvert did say that Jack will be integral to the ending of the series (or something along those lines)... so yeah, I think we'll see them back after the midseason finale.

Castiel is gone for now, yes, but he'll be back. Dean and Cas may be on the outs right now but they're a family, they'll always come back together.

If Kripke or Carver was still the showrunner then yeah, we'll definitely have a tragic ending but this is Dabb. The story shifted as soon as he took over.