Institution & SOPs are the authority that develops moral of people within. His moral authority is still confident & will rise more stronger, as if extended the tenure. Nobody should think that such issues are comparable to some private organizational politics. Army Ranks, from top to bottom, follows the Institutional guidelines.
Just because it is currently IK & Bajwa, so you think the argument of "who does serve" is stronger? Is it even about incompetence & competence or rather about a man with enough experience at hand to deal with severe crises for Pakistan? Let's rise above the average way to look into such matters.