I dont think we should be looking up to the eskimoes or nenets and admiring their diet because they live in unnatural climates that humans beings shouldnt be living in. Rather picture yourself in a tropical paradise next to a beach were one would most likely be eating lots of fruits vegetables and probably more fish than land animals. But thats just my opinion...
Tropical climates and tropical fruits/veg do not answer the question: "is that [eating frozen raw meat] dangerous???"--with dangerous presumably meaning risking causing rapid severe illness or even death. The Nenets example applied to the question and the answer based on their example of eating raw meat frozen for centuries is clearly no, eating the meat frozen instead of fresh or thawed is apparently not dangerous as entire societies have done it for centuries and probably many millennia.
No further claims were made about admiring their diet, but it does so happen that I have done very well on a diet similar to theirs and that I enjoy frozen raw meat myself. So if doing well on a diet means "admiring" it, then I guess that applies in my case. In contrast, tropical fruits cause me a number of problems. For example, just recently I ate 4 or 5 small chunks of pineapple and developed a nasty canker sore, but I foolishly didn't recognize the connection and I ate another handful of chunks the next day, followed by a worsening of the canker sore. I didn't have any more pineapple after that and my sore healed. Raw tropical fruit also promotes acne, dry skin, dental film and plaque, stomach upset and a host of other problems in me--with tropical juices having more severe effects than whole fruit. So for me, admiring a tropical diet would be quite foolish.