It's a joke, the humour of which rests on the blatant and disingenuous misuse of a dataset to push a narrative that said dataset has absolutely no connexion to whatsoever by basing the biased and hilariously flawed demonstration on a complete mockery of the topic at hand (here pretending the election was about picking between white and black candidates) while ultimately delivering aforementioned hilariously flawed demonstration in the most mind numbingly laconical way (as if the dogshit opinion presented was of the most obvious and self evident sort), as a pastiche of internet every day behaviour. I genuinely believed that prefacing it with "if the data is reliable" whould have immediately dispelled any confusion about this post being non serious, but I was wrong. Not-reddit is apparently as fit as reddit for jokes.

Note how people are eager to discard any possibility that a post might be a light hearted shitpost for the sake of collectively shitting on it.