T. A. Gardner
Serial Thread Killer
What he obliquely hints at is bringing back Marxism, Communism, and Socialism as part of philosophical academics and politicizing the field again as it was by his measure, prior to "McCarthyism."The author, Sander Verhaegh, is not advocating more marxists in philosophy.
This is very much a radical Leftist concept an in line with Critical Pedagogy and much of the radical Left's thinking in academia. So, if this paper / article were aimed at Leftist academics, it would be readily accepted as a politically correct view within that community. That would buy him 'brownie points' with his peers.