Aside from the general points in other comments as well as the article itself, I would contend that even modern philosophers are ignorant of real and abiding philosophy.

The contemporary conception and definition of philosophy, of what it is about and its methodology, is directly related to the misinterpretation and misunderstanding of the approach adopted by some of the well-known ancient Greek philosophers from their public works. From this error of conception and approach, over time a solely intellectual approach has been developed by the modern pseudo-philosophers with their equally pseudo-philosophy. Academia has never truly understood the real nature of philosophy.

As for science, well a similar paradigm exists for it in its proclivity to be defined and developed around a partial representation of what it means and should be, from the point of human concepts and its bias. In other words, it's been defined entirely from one philosophical perspective of life and its methodology oriented around that restrictive perspective. This is the reason that, until science itself learns to extend their perspective and conceptual viewpoint, it will never arrive at real causes or origins but rest on mere effects.