To be clear, because the headline I think is a bit misrepresentative. Trump still has over a million more votes than Harris. He just no longer has over 50% of the votes cast.
It’s like 49% Trump, 48% Harris, 3% Other. So Trump still won the popular vote.
This isn’t a “the Electoral College screwed us” situation. He still “won” the popular vote. He just didn’t win a “majority” of the votes cast.
He still had more of the popular vote than Harris, it was just they were both less than 50% due to 3rd party votes. So neither had a “majority” of the vote.
So he still would have won, even under a purely popular vote based system.