You're interpreting the numbers through a lens biased by your emotions.
Sadly, I'm just looking at the numbers. The series of Wikipedia articles on US elections makes it easy to see the D+/R+ gains in Senate, House, and governorships, and the EV counts in presidential years. Links to prior and succeeding elections make it easy to see if a small-ish gain in one year might be at least partly because there was a big gain in the prior year, or to judge the size of a swing.
Odd that you think you know better than the actual people fighting these elections.
It's just funny that you think reading columns of numbers is more emotional than people responding to an election outcome.
Why is it that people keep describing the results as "historical"? What is being compared?
My guess: people are comparing the result to the polls (of which there is only one set, for this election) instead of to past election results (of which there are many, based on sample sets much, much, much larger than any poll). So, GIGO. Favouring the map over the terrain would be a pretty foolish way for any rational numbers-focused person to behave.
[Add: thought exercise for any reader: if you believe the result is "historical", ask yourself what the basis is for your belief. You are comparing the results to the polls? You are simply following the opinions of others? You have looked at the past election results?]