Miss Nevada is very pretty and, except for the wider-than-usual shoulders, you’d never guess Miss Nevada’s life started as a male. You have to wonder hard about the circumstances of a life that lead someone to make such a change. The most charitable explanation I can think of is that they were born a hermaphrodite with ambiguous gender traits, the parents were forced to choose the gender, and chose wrong. My world view is more orderly when I believe this sort of thing is a biological correction as opposed to a mental illness.
Almost all trans surgeries/etc are a form of mental illness, fueled by depraved cultural influence. Even if this person was as you say, “they” should not be allowed in women’s beauty pageant. “They” should have a trans beauty pagent.