That's the very force of the reddit hivemind. I have no interest in /r/antiwork nor their ideologies, but they kept popping up on /r/all, so they get a constant influx of people aligned with the reddit mean opinion, which in turn changes the original community.
As long as the popularity of a subreddit is below a certain threshold, it gets to foster specific discussions on whatever fringe ideology you are interested in, but it never stays that way for long.