Venus gravity assists and aerobraking are standard astrodynamic techniques used to provide bounded amounts of delta-v for interplanetary spacecraft trajectory shaping and orbital insertion.
The claim is specific, empirical, and well-supported by orbital mechanics literature. Retrieved papers confirm both Venus gravity assist maneuvers (e.g., Paper [2]) and aerobraking campaigns at Venus (e.g., Paper [9], Paper [1]) as established methods to alter spacecraft trajectories and velocity changes.