I read this too and they went on to say the following. Other mechanisms might contribute to the arrival of insects at nocturnal light sources over longer range

I read this too and they went on to say the following. Other mechanisms might contribute to the arrival of insects at nocturnal light sources over longer ranges. For instance, insects do use celestial compasses for nocturnal navigation, and artificial light sources may interfere with these heading cues. But even at long distances artificial light sources often remain brighter than the night sky and may cause dorsal tilting that would also steer an insect towards a light source. But I thought I interpreted their earlier point that this isn't the reason they're drawn the light. I recently read a book which said that Moths use the moon for the navigation and artificial light throws off that process, becoming entrapped.