This is entirely vibes based on reading research on similar campaigns so I cant pull a paper with hard evidence about this specifically. But I believe chinese/North Korean infowar campaigns are behind these seeded talking points. They seed in these far left activist communities and then once they find one that sticks the real people in these communities start carrying the message out to other communities and then the CN/NK botnets amplify the messages and suppress the responses. They dont just do this on the left im just highlight left for this specific point.