I think most traditional martial arts are also practiced, taught, and competed in as sports these days. They're not gladiators.
Specialized people (military, self defense contractors, etc.) might optimize for lethality. Maybe Krav Maga has a greater focus on that than most. But most of the famous Eastern arts aren't delaying with life and death stuff anymore either. It's not Kill Bill.
The paper bemoans the BS in "Traditional Martial Arts" but misses the point that they are no longer taught with the same level of intensity/seriousness/viciousness/ruthlessness that it was originally developed with. Lacking this training mindset the "Martial" art becomes merely a "Sport". But many of the ancient texts cover these principles quite well and are worth learning and interpreting in modern physiological/psychological terms.
Specialized people (military, self defense contractors, etc.) might optimize for lethality. Maybe Krav Maga has a greater focus on that than most. But most of the famous Eastern arts aren't delaying with life and death stuff anymore either. It's not Kill Bill.