did you even read the article? Also who is discrediting anything? It is merely showing that while violent crime is up, officer deaths are down, while debunking the war on cops theory.
The researchers attribute the declines in officer deaths, at least in part, by the increased use of body armor and advances in trauma care that also have undoubtedly saved officers’ lives. Moreover, enhanced training, better policy, better supervision, and technological advances have likely played a role in the declines described in this study.