If Nicholas Sparks had written “Nell,” it would have ended up being “Where the Crawdads Sing” (2022). That’s an observation, not a value judgement. Actually, “Crawdads” is a very watchable contribution to the box-of-Kleenex film genre. It loves its setting in the Carolina marshes and the setting loves it right back, providing a sense of place that nourishes a formulaic fusion of class conflict, forbidden romance and courtroom procedural. Daisy Edgar-Jones welcomes us into her character, the star-crossed Marsh Girl, allowing us to focus on her journey instead of the simplistic plot devices that serve as all the other characters.