That's not an argument, either. It's an intellectual tantrum, to borrow a phrase. See Category Error
"A category error occurs when someone acts as though some object had properties which it does not or cannot have. The reason why it cannot have those properties is because the properties belong to objects in some other category or class."
And since the notion of "crippled" cognitive equipment is unintelligible without the presupposition of it having being designed for some purpose, perhaps you can provide in the first place an explanation of the notion of intellectual deficiency, flaw, or dysfunction in relation to something that was not designed, and merely the result of blind materialistic, evolutionary forces. It makes sense to say that my lawnmower isn't functioning as it ought to when it won't start because it was designed for a purpose. But what's with this notion of intellectual "dysfunction" or intellectual "cripples" in a universe devoid of aim and purpose, and nothing but the product of brute physical forces? What sense does it make to imply that some physical forces of cognitive equipment are not functioning as they ought, when they were not designed with any aim or purpose in mind in the first place? One might as well insult the moon for it's orbit around the earth.
Cordially,
Brilliantly said, Diamond!
I have never said that cognitive equipment is not designed for a purpose.