The Electoral College strengthens democracy by enabling local-election-observation to be a highly effective safeguard against fraud and voter demoralization.
At my neighborhood polling place, poll watchers (including local professors, blue collar neighbors, and even occasional UN election observers) volunteer to quietly monitor the election process, verifying that no registered voter is rejected or harassed. With a day off work, any citizen can audit their precinct to verify that end-of-day machine totals match the state's certified results, and could alert the news of any discrepancy. Any motivated citizen can trace their vote's impact up to the state level.
This matters because the Electoral College locks in your vote at the state level by using it to secure electoral college votes. Should fraud occur in some far away state, the Electoral College prevents it from numerically overturning the electoral college votes your state has secured. This federated system is more resilient against local failures.
By contrast, adopting a nationwide popular vote means that votes don't count until they're tallied at the national level. At the national level, a firmware flaw in a poll machine in Hawaii, or a lazy Secretary of State in Arkansas can cause the system to accept fraudulent votes that numerically overwhelm the national tally without ever presenting itself in a way I could observe or report. Without the Electoral College, Democracy loses a lot of its "go see for yourself" and becomes too much "just trust us."
> The Electoral College strengthens democracy by enabling local-election-observation to be a highly effective safeguard against fraud and voter demoralization.
The Electoral College is a bigger source of voter demoralization than anything that exists in any modern representative democracy which doesn't have the Electoral College. (FPTP by itself is bad, but even other systems have FPTP, don't have nearly the degree and persistence of voter demoralization seen in the US.)
Like, I can see how one might utter this sentence in an alternate universe where the US was the only approximation of representative democracy that ever existed and where every commentary was purely theoretical with no concrete comparisons to make, but in the actual world we live in, where there are plenty of concrete alternatives and whole bodies of comparative study, it is beyond ridiculous.