If you’re asking about how to change the genders to support the data, that’s easy…
See this ”How to create a homosexual/gay family" thread.
If you’re asking about how to change the labels throughout the interface to eliminate gender bias, you probably COULD do that with a customization of the PO language files with Weblate… but it’d be a lot of effort.
I don’t think anyone has had enough motivation to do that work.