Paleo is made up bullshit. Paleolithic people in most temperate and tropical regions ate like 60-70% plant foods. The only places where people ate huge amounts of meat all the time are like the arctic.

The first time I heard about paleo, it was a guy on Stephen Colbert who emphasized that a big part of the diet was eating a lot of leafy greens and unprocessed fruit and veg. I think some wires got crossed somewhere and people started calling their wacky all raw meat diets "paleo" when that wasn't what that diet was supposed to be.