[pluckytree]

Saying "Paleo is Stupid" will definitely get more people to read your article. Which is apparently about educating people about saving the planet through food choices. So, educate people, don’t insult them.

[mikestew]

Could be that the author is going for the mainstream, or the largest audience. Personally, I know few people doing a paleo diet, and none strike me as the types to give two turds about their diet's environmental impact. The rest of the folks I know do, indeed, think that paleo's stupid. So you validate a the opinions of a large number of people to rope them in, and they read the rest of the article.

Not that I know the mind of the author, but in summary they insult people that wouldn't ever even click the link, while cozying up to those that do.

[blacksheep01]

There are many different "Paleolithic" viewpoints. Some are low carb, others are higher in carbs. Some are high in protein and some promote moderate levels of protein. Typically though, a Paleo diet is higher in fat and the consumption of processed foods is not suggested. It's all about consuming things that are minimally processed, low sugar, whole foods. Your actively level and genes have a lot to do with what is best for you in terms of your diet.

Many people assume that a Paleo diet primarily consists of meat, but that is not necessarily true. Many Paleo followers promote the consumption of things like yams, sweet potatoes, and some fruits like berries. However, if you listen to someone like Rob Wolff, he regularly promotes the massive consumption of vegetables, roots, and tubers. He even promotes sustainability, supports local farmers, and talks about animal welfare. Even though he recommends not consuming gluten, he doesn't suggest you replace it with gluten free stuff. He goes one step further and suggests completely eliminating grains (e.g., wheat, rice, oats), which are a staple in vegetarian and vegan dies.

A lot of people fail to realize or accept that many Paleo followers were once vegetarians and even vegans. But eventually, usually after many years, they realized that it wasn't working for them and had to try something different like Paleo.