The legacy of Gamergate was an important seed for the Alt-Right. And since the election of Trump, the Alt-Right is rapidly becoming the "big" right. Though still largely ignored by the mainstream media or depicted as Nazis and White supremacists, the alt-right is gaining rapid ground. Everywhere you look on the right, anyone who wasn't explicitly #nevertrump is finding common ground with them, and throwing away the failed tactics that the SJW's used to beat them with.
The legacy of Gamergate is important for the alt-right. It gave us both Milo and Vox Day, 2 higher profile flavors of alt-right pushback. So it's important to understand what it's brought us and how.
Here we have the queen of the Alt-Right explaining what it was, how it came about and what it's legacy looks like. It's an older video in Milo terms, but it's important if you want to know how we got here, and you're thinking of playing a part in it. Milo says that he has nothing to do with the Alt-Right but the thing to remember is that the Alt-Right is fight club. If you're known in the mainstream, you don't talk about being in the alt-right (unless you want the David Duke/Richard Spencer treatment).
The most important legacy of Gamergate is that the guys involved, these "outcast with no social capital" as Milo put it, showed everyone else how to win against the Social Justice movement. They won. And that's something that the guys at National Review have never figured out how to do.