I have not read Foer's book; I just listened to a 6-1/2 minute interview on NPR and am thus qualified as an expert.
What I object to about Foer is much of what led me to go medieval on
Mark Bittman a few months back. When Michael Pollan tells you about the awfulness of the food system, it's from years of research and thinking in the field, and with a thoughtfulness about the very real benefits of the system as it exists today, even as he seeks to awake us to its unseen harms. When Mark Bittman does so it's to scare the shit out of you; and when Jonathan Safran Foer declares (as he does to NPR) that eating meat is THE WORST THING YOU CAN DO TO CAUSE GLOBAL WARMING, we're firmly in the realm of designer hairshirts, the immensely privileged lashing themselves in public so we can see that they're the biggest sinners of all. (No attention is bad attention.)
The problem I have with this is that it affords the author and his followers immense moral superiority, but it's much less clear that it gets us any closer to a real world solution. Let's look at it this way: Foer, presumably, spent exactly $0 on meat this week. I, on the other hand, spent about $250 to buy a bunch of pork directly from a producer in Iowa who raises pigs naturally. Of the two of us, who did more for the cause? Well, depends on what the cause is. If the cause is personally not eating any more meat ever, Foer's purer than I am. If the cause is convincing others not to do so, it's not clear either of us achieved anything. If the cause is supporting an alternative to the awfulness of factory-raised meat, though, I'd say I'm $250 ahead of him in terms of helping a real farmer make a going business out of better practices. So how dare he NOT eat meat?
This is the eternal divide between puritanism and pragmatism— if you've come to see eating meat as original sin, you're not going to be very receptive to the incremental changes that may actually produce reform in the absence of a wholesale conversion of your fellow citizens. Since Foer brings up slavery as an analogy for meat farming (along with the Holocaust and many other subtle and non-inflammatory comparisons--
hey, Hitler was a vegetarian!) I think I can, without seeming ridiculous, point out an aspect of that analogy of my own. One segment of hardcore abolitionists decided that since the Constitution (which wedded slave and free states at the nation's founding) was itself inescapably tarnished by slavery, they would not vote, even for the nascent abolitionist Republican party. They were, as a result, immensely scornful of the Republican president eventually elected, a weak and vacillating backwoodsman who seemed indifferent to the morality of abolition and interested only in putting down the rebellion. It was very late in the day when people like William Lloyd Garrison came to realize that not only could Lincoln actually end slavery, but
only Lincoln could, as a practical political matter-- because he, unlike them, was willing to work with the world as it actually was to move it toward what it should be.
The factory farming system will not change because a few people stop eating meat altogether; but it can change if rather more people support an alternative with their own money. At the same time, this is not the only issue at hand; if all the taquerias and carnitas places in town died because only naturally raised meat became available and only high end restaurants could afford it, that would have its own harmful social effects on immigrant and lower-income communities, which we would presumably not wish to see either. So support better products where you can, but don't feel impure because you bought a burger or a taco from your neighborhood joint, either. Seeing this issue in terms of your own purity has much to do with vanity, and much less to do with reforming a system.
P.S. Although I've been pretty scornful of Bittman's recent conversion to enviromental scold, the man does have a hell of a knack for condensing information for the general public, and one of his recent prescriptions— "Be a vegan until dinner"— may be the greatest nutrition/diet advice in the fewest words ever. I don't follow it every day— hey, I'm no purist— but just thinking about it has made me much more conscious about eating (and kept me from grabbing the same old crap in a hurry on more than a few occasions).