Do people watch this for fun? I tapped out after 30 seconds.

Reduceitarianism seems like the healthiest option, and I say that as a vegan. Spread out through out the week, poultry liver(s), lake-caught fish (ideally salmons), and maybe eggs or kefir seem like all the non-vegan products you'd need. Most non-vegan products normies are used to, such as whole milk, are mostly supplemented, and could thus be supplemented elsewhere. Poultry liver and fish have some excellent fats, vitamins (I think Vitamin K3?), and iron (the superior heme iron) that are hard to get from plant-based items due to absorption (think of lectins in legumes, ALA /EPA/DHA omega 3's, and so on. Even if some of these can be worked around through means like vitamin C for iron absorption from cruciferous greens, soaking overnight for legumes, and I THINK seaweed for DHA omega 3's [my doctor said people DO IT, but they don't OFFICIALLY SUPPORT IT[). I'm not sure if eggs or kefir are essential, but eggs especially can be convenient, and kefir likely has more probiotic/prebiotic content than vegan alternatives (thus meaning you can spread it further, and if heat-tolerant, could be used in hot coffee or cooking).

The average person's diet is mostly UPFs and is full of supplemented foods rather than building up nutrition from sources like spinach + OJ + cooking for iron, carrots for vitamin a, and so on. B12 isn't too bad because nutritional yeast, soy milk, and many other sources have a good amount of B12, as that is mostly a vitamin supplemented into foods.

The biggest concerns I know of for vegans are iron, omega 3's, and B vitamins if it's a purely raw vegan diet. Protein can also be a struggle for especially active individuals, especially on a raw diet. For a diet with some supplemented or enriched processed (not necessarily ULTRA processed) foods like soy milk, the main concerns are iron (it'd require careful tracking and of course increasing absorption through means like adding vitamin C), omega 3's (ALA and EPA omega 3's from flax seeds and the likes aren't as good, but I'm sure authentic olive oil and seaweed can help), and I guess Vitamin K(3?) that liver has (I don't actually know what the vegan alternative would be, but I know kale has some type of Vitamin K in some capacity).

From further research:
1. Zinc is hard to get, but soaking overnight before cooking seems to help with this as well. Phytates and lectins can both be abated by doing this. Unsure about other anti-nutrients, but it seems boiling or steaming can abate oxalates (found in most plant foods) that inhibit calcium and iron absorption.
2. Calcium, Vitamin D, and a few other elements are harder in raw diets.
3. Iodine is hard to get without iodized salt.

You call someone who advocates for Carnivore Diet a "real" scientist ?

Lol.

People are different. Different bodies require a different diet.

See, this is how you know this is a cult. No sane person will watch a 3+ hour video on such a dry topic, much less advertise it to others, unless they've made it a significant component of their identity (ironically, much like some vegans).

At any rate, in case anyone else is wondering, the overwhelming majority of "real scientists" don't recommend keto or carnivore diets at all. The Mediterannean and DASH diets offers the same short-term benefits without the long-term chronic issues.

I do wonder what that guys take on evolution is then.

Like... if we supposed to eat carnivore. His data kinda goes against evolution since we haven't evolved carnivores teeth.