I think the main take away is: the Electoral College HELPS Democrats
They've seen themselves win the popular vote so many elections in a row they were convinced they're the majority of the country, and if only it weren't for that pesky Electoral College, they'd win every election!
What this election proved is that there are plenty of Republicans in blue states like California who don't vote because they know their state is going blue no matter what, but if they did, they can in fact win the popular vote, and if there were no Electoral College, that many Republicans and more would vote every single time!