The articles lacks specific facts and the words it uses are ambiguous, which leads me to believe that they are dubious allegations.
I'm not sure what "anti-US" means here. As soon as someone hears "anti-US" they think that people who are "anti-US" are all religious extremists and members of the Taliban.
Pakistan and US are technically allies, America has done much good for Pakistan, but the US has left Pakistan loose 3 times, as has been admitted by Hillary Clinton herself, so Pakistanis mistrust the US. Pakistan supported America's wars in the 1990s even when it was under sanctions by supporting Desert Storm, Black Hawk Down, and also the intervention in Yugoslavia.
From the perspective of Pakistan, China has had a good relationship with Pakistan for 60 years continuosly, so it is not surprising that Pakistanis would view China as a better ally.
I can't speak for Pakistanis nor for Americans, but I would like America and Pakistan to remain as allies, but that's something for the two governments to decide not for me.