look, no one can dispute for one second the significance of historical sites. and punjab govt or any govt should do anything to preserve those sites. period. and if punjab govt is not doing enough, shame on them and everyone shd come together to protect those sites.
that being said, i will also say that throughout my life i have observed people in Pakistan opposing developmental projects based on political affiliations. water dams, motorway projects, highway expansions, ring roads, new bridges, canal expansions, new irrigation infrastructure you name it and you will find stern opposition driven by political agenda.
if we only go by opposition version, nothing will ever be built and if we only go by govt version, the net result will be an over-expensive and overly expansive product. i think reality mostly lies somewhere in the middle. kalabagh dam being the prime example.