So we’ve just been doing it completely wrong for the past 225 years?
I mean, broadly speaking he ain't wrong. The electoral college system is dumb and broke. It exists to dilute the power of the popular voter and centralize authority to select the President in the hands of State Secretaries and their election-administering deputies. That's why Katherine Harris was such a BFD in the run up to Bush v Gore.
The actual elections don’t matter and Congress just gets to appoint the President?
No no no. The actual elections don't matter and state legislatures get to appoint the electors who get to pick the President. But then their seats are gerrymandered, so really the governor's guy in charge of writing state senate maps gets to select the state legislators who get to appoint the President.
And all that power is rolled up behind big lobbying groups, who get to bankroll the elections of these governors and their state senate allies.
So really its these Chamber of Commerce / Wall Street cartel / ALEC motherfuckers who get to select the President. Which is kinda how it already was, but now we cut out the voter entirely rather than doing the "Beauty Pageant in a Few Primary / Swing States" Kabuki Theater that gets people like Trump and Sanders within striking distance of a major party nomination ahead of insider loyalists like Jeb Bush and Nikki Haley and Hillary Clinton and Joe Biden.