You're saying that eating excess calories in the form of fat won't be stored as fat? That's the most efficient pathway and was critical to our survival.
What you're referring to (excess carbohydrates converted to fat) is denovo lipogenesis which is exceedingly inefficient and rare in humans.
My personal experience over several decades aligns with what Taubes explains in the first book I cited. If you want the technical details, you could read it.
You can't get fat on a diet that is strongly deficient in carbs, while it's easy to get fat on a diet containing high proportions of fat and carbs.
The Eskimo subsist on meat and blubber alone. Roald Amundsen ran the experiment on himself and confirmed it.
The group of people you're referencing (Inuit people btw, Eskimo is a slur) have some of the highest obesity rates in the world! The Nunavuts have an obesity rate of 48%!
The ethiopians have a diet of mostly carbohydrates (>70%), and are extremely lean.
Taubes is a bullshit artist who cherry picks data to sell books.
What you're referring to (excess carbohydrates converted to fat) is denovo lipogenesis which is exceedingly inefficient and rare in humans.