The popular vote is irrelevant because it has nothing to do with how the "game" is played. It's like a baseball team losing a game then complaining that they had more hits. If the game was to win the popular vote then both camps would have campaigned differently, and we have no idea what the result would have been. For example, if it was about the popular vote, do you think Trump would have ignored California during the general? I don't think so. No one can say with any certainty what the popular vote would have been.