It's also New Wave science fiction, and once you get past the conlang and the genre conventions, it's still incredibly violent! Kubrick iirc even once said in an interview that he removed some book scenes from his (initially X-rated) film adaptation, because he thought the invented language helped make them less disturbing to read, but audiences watching them dramatized would just give up and walk out. Anyway I sure do see some of the trends described in the article with my younger students and relatives, but such a strange unforced error makes me suspicious of the strength of the research.