In addition to what everyone else said, which is basically right, I suspect that reddit has thorough data and research tracking how topics are discussed en-masse and how narratives form across the site. I would wager that we were visible enough to actually make a dent in the liberal centrist "hive mind" and they had an incentive to snuff us out before our ideas started to affect the general vibes of the place by providing coherent, popular, and catchy anti-capitalist and anti-American sentiments