I can source meat separately from industrialized processes, as can many others, if not all. The reason why they don't has nothing to do with condoning animal abuse it's pure convenience and price. But it's disingenuous to lump everyone together.

As far as sustainability is concerned, neither can everyone switching to plant diet be scaled up to meet the demand. People just assume animals are taking up arable land that can be used for human food production, which is not true. Huge amounts of pastures can't be used for anything else. More to the point animal feed is made from discard products of plant based foods, things like corn and wheat stalks. If you take animals out of the equation, something has to be done with that as well.

In the end you can down-vote all you like it doesn't change the fact our current food production is extremely optimized. You can't alter it easily without disturbing the balance. You want to reduce animal abuse don't buy cheap shit. Go to farmers market. But no, people are willing to come and preach here about morals while they happily ignore all the other things they don't want to make sacrifice on because they are too precious to them, but are happily telling the rest of us which sacrifices we need to make. If you want to get rid of something, get rid of whole "organic" movement. That growing method is extremely unsustainable and unaffordable for most people.