At my undergrad university, the philosophy department, in terms of courses taught and faculty research, was basically a cognitive science department in all but name. I know there are other programs that lean similarly toward math/logic, philosophy of science or epistemology.
In such programs, the Western philosophers the article is complaining about warrant at most a course of two in the history of philosophy (ironically called "History of Western Philosophy" in many universities for many years).
This sounds more like some kind of ideological/political battle that the authors may be fighting in their departments more than any kind of overriding statement about how philosophy is taught in most schools.