I noticed that the policy was recently updated to:
The gender for this person. If their gender is not known or not applicable, the field should be left empty. If their gender is known, but is neither (exclusively) male or female, it should be set to "other".
My suggestion is to add the following language. Many performers such as RuPaul Charles who may use different pronouns when performing always identify as one gender while not on stage. So it would be inappropriate to use "other" here. Such people should be identified as their off-stage gender identity. (For example in RuPaul's case that would be male since he identifies as a gay man when he is not performing on stage.)