The army isn't completely united, and the current COAS of Pakistan (Asim Munir) is much more ideological than the former one (Qamar Javed Bajwa), who he pushed out after Bajwa and Imran Khan demoted Munir from the ISI to a (relatively) lowly Corp Commander.
Bajwa was working on normalizing relations with India, but himself got undermined by Imran Khan and separately by Asim Munir.
The Balochistan Corp is quasi-independent as well, as they are the primary stakeholder in CPEC.
The Pakistani Armed Forces and Civilian Government have too many veto players, which means any attempt at normalization gets undermined by one of these players trying to maximize their own benefit.
It doesn't help that the Pakistani Armed Forces plays an outsized role in the economy, so individual services and even corps can become business competitors, making internal competition even fiercer.
A similar issue plagued the PLA before Xi era reforms began in 2012, and continue to plague the VPA (but was partially dulled by the SK and UK FTAs) .
Yet the Pakistani Army is not uniform either. Bajwa literally attempted to normalize relations with India before he was undermined by Munir.
COASes don't last as long as they used to, and there absolutely is consternation to being pulled into the old days.