Here is circumstantial evidence that substantiates my long-held thesis that the main culprit is the politicians/political parties.
All those who used to consider the security establishment the main culprit have now come to side with Imran Khan. Because he, at the moment, is against the security establishment. They ignore the fact that it’s a ploy of his (a ploy of a power-seeker), and he wants the security establishment to install him again as the Prime Minister like they did him earlier in 2018.
These anti-security-establishmenters (Note one-ness of their purpose!) include who are known as Desi Liberals (local version of liberals), Leftists, Jiyalas (staunch followers of the PPP), and a bunch of religious rightists.
Whereas all those who considered politicians/political parties as the main culprit are still against both, that is, the security establishment and Imran Khan. Though such people were too few then, they are too few now. They consider both of them violators of the constitution and the law and tramplers of moral and social values.
The above-mentioned thesis of mine, when put forward about 20 years ago, was vehemently contested and rejected, despite my presenting a lot of arguments and evidence in support of it. But now the circumstantial evidence once again vindicates it.