Yeah the article is a little muddled; it’s better to understand Anchor as the oldest existing brewery that makes what we think of as craft beer.

When it started there were many small, local brewers making a variety of beers. Prohibition and changing tastes killed off most of the breweries — it helped to be above a certain size so you could profitable brew, say, malted syrups during prohibition. Those that remained after prohibition ended quickly consolidated — that’s how we got the oligopoly off Bud, Miller, and Coors.

Consolidation continues for decades afterwards of course; the brands that got rolled up into the conglomerates included a number of light lager breweries. What distinguishes Anchor from Yuengling and others is Anchor made something other than a light lager — they made steam beer, a warm-fermented lager that has some ale characteristics.

I would categorize it as “proto-craft,” since the real craft movement started in the 80s with Sierra Nevada and Sam Adams; Anchor was an inspiration, a holdover, and an anomaly.

(Most of my sources for this post are Celebrator beer magazine and a series of books I’ve read, but I don’t have them at my fingertips so I may have some specifics slightly wrong here, caveat emptor for reading random internet comments.)