What an odd take. At this time, and in this part of the world, Cahokia was more developed than anywhere else. It had a trade network that spanned from the Gulf of Mexico to Canada to the East Coast. Pretty elaborate social organization.
And I'm not sure what "incapable of evolving" means in this context.
The Iroquois didn't have guns. But as soon as they got them, they managed to terrorize the entire Northeast for a century. Likewise the Plains tribes and the horse.
When new tech is introduced, even "primitive" people catch up very quickly.
Houthis...