No he didn't fake a tweet. Rather he tweeted something he believed to be true from another twitter user who had faked it. That guardian article, like usual is full of factual inaccuracies.
There's a fundamental difference between the two, but I'm glad that you like always ignore the rest. After all, can't let that narrative you've clung onto for two years be disproven in your mind. And those people you've been defending really were and are just plain shitty people who were unworthy of your white-knighting and were engaging in the exact thing that they claimed gamergate did. Never mind 2 years on, that there continues to be no proof of anyone in gamergate having done anything. But it continues to come out that the "non-existent anti-ggers" as you've put it in the past, really were out there doing it. Fun reminder: In that heatst article, Ian is one of the people in those logs and had a change of heart after realizing he had become that which he claimed he was fighting against.