Don't correct that. He's wrong. It's way more than 46, most multi-term presidents defeated several different contenders.
Edit: I got 63 white men and 1 white woman, not counting pre 12th amendment elections, not counting minor candidates who didn't win any states electors. There's a lot more if you include minor candidates, but then one of them would be Cynthia McKinney who is a black woman.
what are you talking about? racist? I think they're saying that since ~2% of the population identifies as trans and more are probably eggs, we likely had one trans president before, but they weren't out to the public, or perhaps even themselves.
I read it as him making a reference to black people being legally considered to be 3/5ths of a man back when the united states was founded. So if you go by those definitions, Obama wouldn't have added up to "1".