My guess is that it’s to avoid something like finding records of a past leader who is gay, and them then being the first
My issue with this is: why does their sexuality even matter? It’s their GD business
Eta: I also hate this with race and gender. “First woman to…” why? Why are we so focused on the color of people’s skin, their religion, what’s between their legs, or who they love?
I want to live in a world where a mixed-heritage lesbian woman is elected and no-one bats an eye, or mentions anything about it unless it comes up organically by the person elected. Otherwise the only legit question should be: is this person the best candidate for the job?