How does that make any sense? Night of the Hunter is a brooding, atmospheric, tense crime drama, shot with shadows and edgy themes. From everything I've read in the past few days, that is a film noir. Not sure how what your line of thinking is here.
In Film Noir, the genre typically has villains that are either a femme fatale of sexual nature, or the mafia, or both. Night of the Hunter has neither.
Same with Blade Runner. Even though it has film noir lighting, the villains being freedom fighting extremist types, takes away from the film noir genre, since a lot of the examples from the 40s and 50s, have either a femme fatale or mafia type villain.