That's just not true. Hate is an easy thing to do. Complex matters require patience and forgiveness. There are huge amounts of Afghans living in Pakistan, married to Pakistanis, on good positions, well respected people who love both Afghanistan and Pakistan. Same amount of people are there who are now settled abroad but they once moved to Pakistan from Afghanistan before moving out. They can speak Urdu and their own native language as well. They gel in well with Pakistanis, they knows us, have friends here, they studied with us, they shared their youth with us, they respect us. Come & pray to our mosques even when abroad. They don't go to Lebanese mosques, Turkish mosques, they come to Pakistani ones because Pakistan is their second home and nature.
You just cannot label everyone the same. Yes there are a lot of people spewing hatred on social media. A lot of those accounts are Indian funded & trained media cells. Pakistan was way stronger than Afghanistan in every way and our society has been heavily affected by this 5th gen war. Morals have gone down, youth is frustrated and angry, there is chaos and lack of clarity in minds. These are all normal results of such a war.
Your holly land Pakistan has a full basket of shitty people. Mir Jaffirs, Mir Hamids, Talat Hussains, PTM, MQM and what not. From media to politicians to bureaucracy to army. Such people are everywhere. Humans are already by default more inclined towards bad than good. Bad is easier, good is difficult, sustaining good is even more difficult. It takes a lot of good people to build a good society and good society to raise good people. Moral and social collapse comes with 5th Gen warfare. Pakistani society has been affected by it and so is Afghanistan. That does not mean you start blaming people who don't know any better. Several journalists and media houses in Pakistan operate on foreign agendas. Same has been happening in Afghanistan. Youth is easily affected by these things. History books are rewritten, heroes are changed. Its easy to buy people in war inflected countries. May those people be in politics, army, intelligence. This is a fact that both Pakistan and Afghanistan are dealing with. Poor economy means plenty of traitors available at all times. Swearing adds to the problem, doesn't solve it.