I've never heard anyone in the far-left make a point about unpasteurized milk, why would you put that in the title and then not reference that anywhere in the article, Salon?
Yeah and those who do for shit don't drink unpasteurized milk. Maybe some hippies do but honestly their politics are all over, often "apolitical", certainly not far left.
That statement isn't about the unpasteurized milk, it's about being anti-establishment. If I had to guess, I'd say the idea is to say "both these groups are anti-establishment, now let me show you how crazy the raw milk thing on this side is so you'll implicitly think the other group is a bunch of weirdos too."