Muh constitution is purfect hur durr.
I know it's in the constitution but that doesn't change the fact that he was elected by the minority.
That doesn't change the fact that America is the greatest country in the world with the greatest democracy ever
But for real, this was setup to protect states rights, otherwise you'd have a few of the largest states deciding the election every year. And states are still a thing, for example California probably didn't like the tax reform being passed because they have one of the highest state and local taxes (like 10% compared to my state 3%), and is just one of many reasons they'd prefer democrats (Florida the opposite with none). So combine that with different cultural viewpoints (Bible belt, Appalachia, etc..) and a whole lot of embedded political reasons this system allows for their votes to matter.
Dems and republicans have won from minority popular vote, it ain't gonna change anytime (unless it's true and in 30 years we see 75% of the population in cities)