Something similar happened in American football yesterday. The Baltimore Ravens scored 40 seconds into the game, led the whole game, but then the Cleveland Browns kicked a game winning field goal as time expired to win it 33-31. So the Ravens were winning for 59:20 out of 60 minutes and lost, I believe I saw that was an NFL record.
As someone who’s never watched any of this guy’s videos before, I wouldn’t have known that any of the ones they left in were Easter eggs. It seems like they tried to remove them, but just missed a bunch.