I was in a discussion about inheritance (and wills being made based on age-old sexist grounds) and it got me wondering how the line to a throne would be affected by one of those in-line deciding they were trans. If the line to a throne (or other title) was based on the male line could a woman self-ID herself to leapfrog over the born men?
Are there other sex-based entitlements (aside from the basics like safety and privacy and the ones we've seen in sport and women's awards) that could just be wiped out by self-ID?