File an issue and discuss this or commit a merge request that includes the options you think are missing.

While I'm with you politically: If a narrow perception on gender was a reason for not using a specific software, I probably couldn't use any software at all.

AFAIK, Microsoft, Apple, Google and others don't give you more options in this regard either. So I find it quite harsh to abandon a small project like this but accept what you get from bigger companies.