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.
Not nationally, but because Maine uses both Instant runoff voting for presidential elections, and the Congressional district method of assigning electors, it’s mathematically possibly for Maine to split its electors 2-2. eg, the Republican wins both districts individually, while the Democrat wins statewide. Not this year though – needs a competitive 3-way race so the runoffs matter.