Yeah. It's one of the only things pleasurable about his win. He won because of the EC, but he can't stand the fact that the majority of people in this country didn't vote for him. He'll never, ever let it go, which means that everyone should remind him of it as often as possible.
I do believe he genuinely doesn't like the EC, and winning it certainly meant nothing in comparison to winning the popular vote, because the EC isn't about winning a popularity contest, it's just about winning the right geographical locations, and there's no real ego boost in that.
His entire life revolves around having the biggest numbers, and making up the biggest numbers when he doesn't have them. Ratings, crowd sizes, numbers of votes, social media followers, numbers numbers numbers is what he obsesses over, he ties them directly to his ego and happiness.
Maybe if he had won some kind of rare landslide in the EC like 400+ votes or something it would be something, but his was completely standard, average.
Ironically I believe he would love to switch places with Clinton, to have won the popular vote by millions but lose the EC by a standard amount so he can claim he was "the real winner" forever but not actually have to be president and do all that work he doesn't understand or get any pleasure from.