Rights, and there's also this:
http://nature.berkeley.edu/miltonlab/pdfs/meateating.pdf
Dietary lean red meat and human evolution (which puts our consumption of meat back at least 2,000,000 years, so predating homo sapiens)
Meat-eating by early hominids at the FLK 22Zinjanthropussite, Olduvai Gorge (Tanzania): an experimental approach using cut-mark data - ScienceDirect (again, pre-homo sapiens and the question under investigation is whether we were hunters or scavengers at that stage, not whether we ate meat)
All scholarly papers vs. your huff post article. The fact is, hominids were eating meat long before Homo Sapiens appeared. We have the archaeological evidence for that. Chimps eat meat and they are one of our closest wild relatives. The general run of scientific evidence is that hominids eating meat is not unique to Homo Sapiens and probably goes back a long way. There is also the hypothesis, currently under investigation, that eating meat contributed to the development of our brain.
IOW, eating meat began because it gave an evolutionary advantage. Perhaps it is no longer necessary, but 2,000,000+ years of history suggests to me it is quite natural.