Maybe the alien version of anthropomorphism? If they and most galactic species eyesight was in the infra-red red range then the might not think of hiding light

Maybe the alien version of anthropomorphism? If they and most galactic species eyesight was in the infra-red red range then the might not think of hiding light in our visible spectrum. Imagine if exhaust from our cars gave off visible light? We'd want to change that pretty quickly.