There is a misunderstanding: having meat on the table doesn't mean that everyone around this table will necessarily choose meat, the meat being there as a choice along with other foodstuffs to choose from. That is if there are at least 2 persons eating together. When I'm alone, I don't put everything on the table: I just go to open my fridge where the meat is hung and I take its smell.
Another point about the book quoted, is that it wasn't intended as a guide to practice instinctive nutrition, but just to make his theory known to the largest audience as possible. At the time, most of the people interested in nutrition where vegetarians, and I always felt he didn't want to drive them away by being too harsh against vegetarianism. Thus the tone, "yes, I understand you, folks, it would better if we could live without meat". For those interested in doing the experiment, he advised at the end of the book not to do it alone more then a week or so without having followed his introduction seminar, which lasted two days.
There was also a one week seminar in which we discussed in depth within a small group all the theoretical points in biochemistry, immunology and such.