no we also use this word.
my farher used to teach me pashto at home his spoken pashto was also literary and too difficult so only i managed to adopt the book version while my brothers speak the routine yousafzai dialect which is spoken in most of the urban kpk
for the last para. not true come to Kpk you will see punjabi brothers have started too many trends including establishing food streets in Peshawar. other trade activities
Maybe in Peshawar but what about Afghanistan? Pashtuns in Afghanistan hate Punjabis to the core. They didn't spare Hazaras who sought refuge in NWFP, which is now named as Pakhtunkhwa, to escape racial war from Afghanistan. In sight, it is big mistake to change the name of province considering there are other races as well.