Why would you choose the 538 map to pick on when it's one of the few maps of this kind that actually allows you to zoom in on each area? That's as good a solution to the problem you're referring to as cartograms are. If not better.

Maps will always have inherent demographic bias, that's just how it is. And, sure, anyone who makes maps should be always looking for good solutions to these issues. But a smug Medium article proposing the use of cartograms, as if that's a new idea, doesn't help anyone. Except perhaps you, the author, if you're looking for some kind of attention or recognition.