Yes, the values argument is true, but the institution has a responsibility too. So, a common man can be lazy, reckless, and pacifist but an army man mustn't. A common man can be biased and unfair but a judge cannot be.
Failure is an orphan anyway but helping in constitutional things like in disaster management or security situation is alright. Leading Pak economy, foreign policy, etc toward better is acceptable (Machiavel's approach) but going 180 to your role is unjustifiable.
IK trusted the face-value and pursued a political approach. Like he trusted many MNAs, military leadership, Chief EC or TTP. It can be a political issue but mainly it is an ideological issue coupled by crime, smuggling, power monopoly, etc.
Anyway, once one entity raises arms, it should be dealt with arms.