Her videos have never been just for gamers or devs, they're only intended to highlight the tropes and poor representation toward women that exists in games, and why that's something developers should move away from (not only because games have a much broader audience now, but to stop reinforcing the idea that women are these helpless sex objects that the big brave men have to rescue).
Gamergate was never anything but a facade to harass and threaten women, under the pretense that "it's about ethics in video game journalism", despite the fact they've yet to show a single example of journalistic corruption nor gone after anyone that isn't a female in the industry or supporters females in the industry. If they were about corruption they would be going after larger sites and publishers, instead of indie developers and people that aren't even journalists at all. Of course the members of GG are so delusional they'll simply continue to harass people saying it's not about harassment in the same sentence as they are doing exactly that.
And developers are starting to notice. People can say that it's just a natural evolution of games as they grow as a medium that these tired cliches will start to become less common, but nothing ever changes until someone makes a point about it. There's a reason Sarkeesian has been brought in to developers to discuss games with them and has made numerous talks at large developer conferences like GDC.
You can say that these are just 12-15yo (and certainly some of them are), but the sad truth is that a lot of these are fully grown men who are now feeling threatened that a woman dare want to be part of their little club. You can look at any number of "rebunk" videos that have popped up which are very clearly being made by adults.
There are always internet trolls, but there is a line between people telling you to go die over the internet, and leaking your address, bank account details, and sending very specific threats toward you and your family. Yes, some of them might not have any weight behind them, but that doesn't change how seriously they should be treated. If you suddenly started being bombarded with hundreds of thousands of people saying they were going to break into your house and murder you, with all those details out there, would you not be concerned?
And female developers have been asked what they think. Why do you think so many of them are being harassed and threatened? Really, I don't know if you're trying to deny this is a serious problem, support Gamergate, or just don't care enough to look fully into it.