This review may contain spoilers. I can handle the truth.
Paul Thomas’s review published on Letterboxd:
This review may contain spoilers.
I know some people hate the last minute swerve into this being a satanic cult. It was all working so well as being about mental illness and then it turns into a cult! Trust me, I felt that too on initial viewing.
Except, it's still about mental illness. The final scene just moves text into subtext. Nothing is loss. Yes this is a movie about a satanic cult, a grandma who was involved, and the need of a male through hereditary to allow a demon king to grow powerful in earthly flesh.
But... it's about mental illness.