He was born 4 months before Kamala Harris, if he is “old” then so is she. Are you saying that Kamala is old?
As for a “white guy”, well, the majority of the United States is white and roughly half of it is male. If race and gender matter for representation, as you seem to be claiming, then it’s entirely reasonable for one of the two positions to be a white male while the other is a PoC female.