A good idea, as you read the deluge of people saying "This obviously means I was right about the Dems" is to make sure that what they're saying accounts for extreme amounts of ticket splitting, with Democrats downballot winning extremely disproportionately:
Nevada and Michigan look to both be sending Democratic Senators with their Trump votes. Democratic Proposals and judges and representatives won across the country (again, in Michigan, our Supreme Court is now 7-2 Democrats, making the last statewide Republican who isn't named "Donald Trump" to win in Michigan Rick Snyder in 2014 over 10 years ago).
So, does the explanation you are reading account for the fact that this seems to have been the country very specifically choosing Donald Trump, and tolerating whatever Republican happened to get carried along in the sweep?
Because virtually everybody I have seen is talking about Democrats this and Republican that, rather than grappling with Donald Trump.