Actually, better questions, why do most female players exclusively play female champs? I know this one girl IRL who is an Ahri main and her top 30 champs in terms of mastery are all pretty female champs. The highest male champs she has (under the 30 women) are the eboys like Viego, Kayn, Yone, etc.

Unrelated but she also has the $500 Ahri skin that some simp online gifted her.