Jenner is lying. He is a man. Is Dolezal lying about being black? Who's to say she didn't have a Moor grandfather a thousand years ago? And as the article said, go back 1.9 million years and we're all African.
So the takeaway is that Dolezal has more right claiming she's black than Jenner does claiming he's a woman. Yet, it's Jenner's "self identity" we're supposed to accept without question.