The risk associated with being overly focused on demonstrating the "right stuff" is primarily:

Being overly focused on demonstrating the "right stuff" can create a mindset in military personnel that prioritizes personal reputation, perception, or competitiveness above safety and effective decision-making. This tendency can lead to dangerous behaviors and recklessness, as individuals may feel pressured to perform or adhere to an idealized standard instead of evaluating the actual risks and conditions they face.

When the focus shifts to proving one's capabilities or adhering strictly to perceived expectations, it can impair critical judgment and lead to situations where individuals may take unnecessary risks, skip important safety protocols, or make poor tactical decisions, significantly increasing the likelihood of mishaps. This risk is especially pronounced in high-stakes environments such as military operations, where the consequences of such behavior can be catastrophic. Therefore, the primary risk of this mindset is indeed the generation of dangerous tendencies that can compromise not only personal safety but also the safety of the entire team and mission integrity.