I'm not sure that's the case. The Yor would definitely not appreciate being crowded due to the way they communicate with each other. (which can be best described as a form of short-distance subspace communication).
While your answer sounds logical, I'm just going by the citizen data card which says no approval penalty for overcrowding. If you're right & they do suffer an approval penalty for overcrowding then the info on the data card needs to be corrected 
