https://ourworldindata.org/data-insights/almost-all-livestock-in-the-united-states-is-factory-farmed
Estimates are still quite high globally too. Around 94% of all globally farmed animals are factory farmed. 74% of all farmed land animals are factory farmed and virtually all farmed fish
I think maybe it's referring to small farms. My family used to own cattle and would process one every few years. I used to get meat from local butchers who used local cows (until I found bullet shrapnel... surprise). Also beefalo are usually small farm vs factory as they aren't really easy to maintain in small cramped environments.