Likewise one could surmise that fearlessness such as from a drug is counterproductive, leading the soldiers to become reckless and getting them killed more easily.
Dictators usually have huge blind spots. Hitler believed he was a military genius, so constantly overruled his generals’ plans in Russia, undoing himself. He deprived his army of rollingstock needed to supply his troops, because he gave priority to shipping Jews, Gypsies, etc., to the death camps.
Stalin refused to believe that Hitler meant him any harm until his troops invaded. He also ran gulags for fun and profit, purged his military of officers who knew what they were doing, starved his peasantry to death, and also had this super soldier idea.
Putin invaded one country once too many times, incapable of conceiving that it was evolving socially, politically and militarily in the interim since his last invasion.
China’s now developing their own brand of super soldier that makes Schwarzenegger in his prime look tiny? I think there’s a fundamental flaw in how they did it, or how they’ll utilize this resource. What that flaw is, we’ll discover if and when they invade Taiwan. But I know intuitively that it’s flawed.