no reason, aside from my worry that it might clog the gender tags. fetters tend to share the gender of their vessel given the time they are around (hypothetical example to explain what i just said, let's say nan identified as a boy as a child, so the widow king is a boy. nan starts questioning his gender, so the snow king's gender is ambiguous or nonbinary. nan realizes as an adult that she actually identifies as a woman, so the june king (queen rather) is a woman. this isn't canon, but just. hypothetical!)
do you think they should go in the regular gender tags or should we leave them out, assuming they share the gender of their vessel?