An adjacent point is that states are free to run their elections as they see fit with relatively few rules. For example most states have a winner-take-all result for presidential elections where a guy who gets 51% of the vote get 100% of the 'seats', so to speak. But that's not necessary - Maine and Nebraska, by contrast, have proportional systems, where they split their vote proportionally.

So how to interpret the results from one state could be quite different (and potentially subject to rapid change) even if you know the results were genuine. So the results of states always would need to be converted, by the states, into e.g. 15 final votes. So the electoral college emerges quite naturally in this context.