I find self-contradictory the idea that the pronouns have a single origin that at the same time appeared very late and propagated everywhere even in place that

I find self-contradictory the idea that the pronouns have a single origin that at the same time appeared very late and propagated everywhere even in place that have been isolated before the appearance of the pronouns. He places also the appearance of self-awareness and fully human behavior 12000 years ago, but self-awareness exists in other animals and many human behaviors date from long before (tools: 2.5 Myr, fire: 400-1000 kyr, art: 30kyr) I also read the article about the snake cult of consciousness that read more like an elaborated numerology than a scientific hypothesis