Yes, bragging about the Electoral College - especially in the context of having a "mandate" when you failed to carry 54% of the nation's votes - is meaningless BS. You only get to brag about the EC legitimately if you also won the popular vote.
Of course, the GOP does the same bragging with its gerrymandered House "mandate" every two years, so nothing new for the oligarchs who hate democracy.
Bill Clinton didn't have 50%, first time he didn't pass 43% but he was legitimate president.
He had millions of more than HW, not millions less.
POINT is that he didn't win majority, 50% of PV, but he won EC and he is legitimate winner and president. When we (if ever) abandon EC, than winner of PV will be president. Today, when we have EC, campaigning is much different that it would be if we had PV system, and goal for every runner is not to win PV, it's (practically) irrelevant.