Many Miss Universe contestants come from countries where natural born women are suppressed, abused, and otherwise treated like 2nd or 3rd class citizens. And even in advanced nations like the US, women still do not receive equal pay for equal work, and as the recent healthcare debate has shown, aren't even treated equally when it comes to reproductive health. In some countries, female fetuses are aborted at a far greater rate than their male counterparts because the female is considered to be less valuable, even worthless. For a natural born woman life can be a huge struggle, from not being taken seriously in a discussion, to being treated like a slave in a home rather than a spouse. I could go on and on, but you get the idea - we live in a male dominated world, where women struggle for the same rights naturally given to men.
Now, you have a beauty contest. There are 100 contestants: 99 naturally born females, some coming for abusive cultures, and 1 naturally born male who had gender reassignment surgery and now is considered female. And she wins.
What message does that send to all those women from all those countries? It says, 'the men still win - men always win'. Regardless of how she looks now, regardless that she is now considered female, to those women who lost they will only see the man she was born as, and it will be a glaring reminder that they can never be equal in a male-dominated world.