Steve Bannon's involvement in promoting Gamer Gate and co-opting it into a (what would become MAGA) recruitment funnel is fairly well documented[1]. There's absolutely nothing "allegedly" about it, he proudly spells it out himself[2].

Everyone is running this playbook now. The far left, the alt right, IS, Hamas, IDF. Russia was an early player in the space too but seems to have lost a lot of that ability when Prigozhin fell out of a window.

[1] https://www.britannica.com/topic/Gamergate-campaign

[2] https://eu.usatoday.com/story/tech/talkingtech/2017/07/18/st...