Single proof? How about the thousands who went to Afghanistan pre-2001 to fight alongside Taliban or the many many more who wrote in their favor, donated to them etc? Public may have voted for the usual feudal parties,** but support for Afghan jihad and Taliban rule was always high.** Even now, you have JI, JUI, PML-N, PTI supporters crying over the deaths of our "muslim talib brothers". The proof is all over the media even today.
With your logic even Obama is a Taliban. Being opposed to Bush mentality does not mean being supportive of taliban mentality.
If a few hundred people went for Afghan Jihad how does it prove that majority of Pakistani people are pro taliban.
These rantings can impress people frem west but can not fool Pakistanis.
PTI lost a lot of support recently just because of their pro taliban stance. This is a big proof that Pakistanis at large do not support extremism.
As far as somebody getting happy over killings of even enemy represent a very sick mental state.