Yes, very frequently in noir the supposed "darkness" is glossy and superficial, concerned more with shady lighting and leggy broads in slinky dresses. Knock-off noir heroes tend to be too jaded to be affected by the tragedies that occur around them, and the victims are cheapened. My instincts say that true noir builds off a base of fear and compassion, not apathy, but I don't know many examples that work that way.