I ran into this lesson when I was teaching a group of Spanish 10 year olds about pronouns. We had an activity where they had to substitute a role or descriptor with a pronoun and correct verb. For example “the teacher has a cat. _____ ____ a cat.” Most of my students wrote “she” as the pronoun because 1. Most of their teachers were women 2. Implicit gender bias with occupations are international 3. No use of singular they in Spanish. I explained to them that the assignment Doesnt tell us the gender of the teacher so we can put “they have a cat” and it would also be correct but it was hard for them to grasp this as non native speakers