It's pretty alarming that only one woman has won for best director and, counting Ang Lee, only one person of color. And it's something that I, personally, hope changes as it would indicate that more people have access to the tools and connections needed to make a movie on that scale.
I would agree that right before it's handed out is not the best time to repeatedly bring it up, however. Had it been James Cameron, Jason Reitman, or Quentin Tarantino who'd won that award everyone would be talking about Oscar politics instead of letting a deserving (debatable, but not the point) director have their moment.