Very nice article, and I'm sure the irrigation and manicuring is certainly state-of-the-art as they claim.
Reading about courses like this however, makes me sad and wonder about the missed opportunities to provide a truly challenging cross-country experience. If you are designing a course on grounds essentially from scratch, what is the rationale to not include any "features" that differentiate the experience from being a grass road race? Nothing wrong with manicured sections, or even a wholly grass course.
For aesthetic reasons as well as for the good of the sport there should be mud, water, rough terrain, barriers, etc. Even in this article they boast about the course offering multiple loops as a shared-use facility, why include something like "pro-lines?"
Not as if there are many "true" cross-country courses in regular use, but it is sad to see course design reduced to grass paths.