Not all that strange, Mikey, it happens here too. Just less often; but that's by accident rather than design.
It *does* matter that Trump lost the popular vote. Not because it undermines his legitimacy -- he won by the rules, and the rules are wrong, but he won all the same -- but because it profoundly affects the narrative. He won not because he was Trump, not because he was popular for what he stood for, but because he was Republican, and Republican voters had to swallow everything he stood for in order to get a Republican president.
Some people liked him too, no doubt, and his core supporters will have seen nothing yet that doesn't fit into that bizarre "witch hunt" narrative. (It's getting more and more tenuous by the day, by the way, in particular as it seems Trump's investigated the possibility of Presidential Pardons, including his power to pardon himself.) But to say that so many people voted "for" him is to miss that (a) many more voted against him, and (b) even among those who voted "for" him many will have felt they had no choice to avoid Clinton and the Democrats.