Why does Snp 2.2 not consider eating meat to be killing karma?

The teaching of Buddha Kassapa in Snp 2.2 : > “Killing living beings, > hunting, cutting, binding, > theft, lying, fraud, deceptions, > useless recitations, > associating with the wives of others: > This is a raw stench, > not the eating of meat. > Snp 2.2 (and more similar statements in the whole text of the same sutta) From Buddha Kassapa's quote above, we see that eating meat by itself is not killing karma. However, it is popular opinion that eating meat is definitely killing karma because it indirectly causes the killing of animals. This was also Tissa's attack on Buddha Kassapa, a brahmin by birth. What is the correct understanding of the principle of karma in Buddhism, for this case of eating meat? Why does Snp 2.2 not consider eating meat to be killing karma?