He's deliberately misleading you about the issue. Sarah Nyberg has been one of GamerGate's most outspoken critics from the start of mob. She's suffered a lot of harassment over the months as a result of opposing the mob. A few weeks ago, right-wing "journalist" Milo Yiannopoulis of Breitbart (whose last claim to infamy was writing a hit piece about how African-American activist Shaun King wasn't black, with his primary source being recently-arrested terrorist/troll Joshua Goldberg) dug up some dirt and wrote a hit piece on Nyberg, claiming she was a pedophile. His primary source on this were cherry-picked IRC logs from ten years ago, where Nyberg quotes excerpts from an ageplay journal and mocks it with her friends. Yiannopoulis conventiently ignored excerpts from the very same logs where Nyberg explicitly says this.

GamerGate now celebrates the "success" of their smear campaign, ignoring the inconvenient fact that no one outside right-wing idiots gives Breitbart any smidgen of journalistic credibility. Ironically, they accuse Nyberg of being a pedophile for making tasteless jokes ten years ago, but demand the right to free speech and to be taken seriously when they do the same thing in the modern day.