"Primal" is a word coined by Mark Sisson. "Primal" is whatever he says it is at the current time, and if fluctuates greatly. He has a 'meal replacement' powder that he sells for profit. It has the word 'Primal' stamped on it. It isn't actually "Primal" by his definition, only by his trademark association.
I laughed very deeply and vigorously while reading this....I'm actually laughing again just typing this reply.