I haven't watched yet but need to. There are two podcasts with Rogan on it. One is Chris Kresser (might not be quite the right last name) who has done a lot of the critiqueing and one has the same guy with James Wilks. They're interesting but the issue is that both guys deal with half truths in the sense that they compare a modern American Diet with their selected for of nutrition and either one will be a lot better. I think you can be vegan and healthy. I think it takes a lot of work and an incredibly high level of knowledge to be as healthy as someone eating a healthy, whole foods, omnivorous diet. Where Wilks looses me is when he cites research and inflames the actual data to show meat is bad. Lean meats are not bad and they will not give you high cholesterol on their own.
Diet studies are so ******* hard because of other variables. For instance, if someone cares so much as to avoid meat, I'm guessing they also care enough to exercise more, not eat a bunch of candy, etc. There are so many variables to consider and cut out of studies so saying the average vegan is healthier may be true, but it's not necessarily meaningful. I bet a carnivorous diet give a lot of the same health benefits as well.