RD has decided, based solely on his personal prejudices, that the social sciences are worthless. He reminds me of a man I used to know who told me that since he, personally, had no interest in cosmology, no one else should be interested in it either.

RD is given to such inanities. In the https://www.ncronline.org/news/justice/conference-examines-clash-between-us-culture-catholic-social-teaching thread, he said that dysfunctional families "the only thing serious Catholics should be focused on". He's rather arrogant in thinking that his priorities should be everyone else's priorities as well.