It's a nonfunctional field without standardized input. Adds complexity without improving performance. Should just be part of the freetext.
Discussion
It could be. I am waiting for nostr:nprofile1qqs8d3c64cayj8canmky0jap0c3fekjpzwsthdhx4cthd4my8c5u47spzfmhxue69uhhqatjwpkx2urpvuhx2ucpz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3vamnwvaz7tmjv4kxz7fwdehhxtnnda3kjctvll3q2p to choose hardcoded or free field.
Actual gender would be interesting, for #datestr 😂