I've posted up the revised version. That explains why Russians keep typing Jung as LII.
I don't think Gulenko means your overall philosophy, but more like your internal predisposition that influences your motivations, which the person is also likely to project on other people and the world at large. What he describes for ILI type, this "agnosticism of the intellect" and "knowledge is possible only when one attains complete inner clarity" is actually similar to what an ILI friend of mine has tried to describe about his mindset. It is also similar to what korpsey has described in this post - epoché, the suspension of judgement that serves as the basis for skeptical thought.
He is talking about the internal perceptions of different types, not their abilities, talents, skills, IQ, or EQ for that matter. Using your example he is not saying that "LIIs build systems that describe the universe" but that "LIIs see the universe as if it's built on systems". That's quite a different matter.
I did cringe a little at the word "materialism" as some people will associate it with some negative connotation or another ("greed" comes to mind) but I suppose he had no better word to use.