It's impressive that you could get yourself to write that comment without irony about a blog post promoting rationality
"I almost learned something about rationality from reading this! But I will irrationally dismiss this person because reasons"
"I almost learned something about rationality from reading this! But I will irrationally dismiss this person because reasons"
So, yeah, I am going to dismiss arguments that are based on analogies to discredited ideas.
To me it looks like it was just imaginary concept used as a tool. Once you understand that development of cognitive abilities are related to environment and that they are not necessarily "levels", you can forget the whole idea of "primitive cultures".
This is prime example why one should sometimes "entertain a thought without accepting it".