Would have to disagree brother!.. On the contrary, It is Pakistan's every intention to keep the door open. US with world's largest economy can easily afford to move away from us, it will 0.003 percent effect its economy. Geo-strategically, it does not need Pakistan as much as it needed a year ago, It has left Afghanistan. It is enjoying great relations with our arch rival india. For us, for our exports, the USA is everything! it's our largest buyer of our exports. Not just cotton, but our emerging IT industry thrives on US based clients.
Pakistan's military establishment is very keen to have great relations with both China & US. We know, we still need US for our exports, for its influence on Europe, for US being the leader / important player of many intl organisations.
US is still very relevant and key player in defense / technology / infrastructure. Not just in keeping the PAF F-16 fleet operational but in much broader spectrum that we overlook. For instance, the GPS which we use in almost every commercial app and even low level military gadgets use it.. It is the product of DoD of USA. Anyways, topic will slide somewhere else. Would be happy to discuss the enormous US influence on Pakistan in any other thread.
However, the positive thing is J-10C is another series of breaking the dependence on US on high tech military equipment. First major step was laid by JF-17. For us as a nation, we should be looking for our own home grown capabilities in next 1 to 2 decades. So neither side can influence us for their vested interests.
Cheers.