No, he really didnt... (sorry, this article kind of makes a few ok points, but it fails miserably at giving a bunch of credit to Trump on something that shouldn't be given to him. Feels very clickbaity).
That seems to be a key statement, and it's true, as far as I can tell. What about that would you disagree with?
If you think Trump bumbled into his victory, he (himself) did. But he had some incredibly clever people abusing the media to boost his campaign, and they ran circles around Obama's 2012 strategy (which is very similar to what Clinton was using, digitally).