I have been active on the blogosphere for quite a while now, and it astonishes me a lot to see that majority of Pakistanis put the blame for any problem of their country on Zardari, without stating how exactly.
As you have stated, you are naive at discussing Pakistani politics and milieu of factors that effect the judgment of people. This is an extensive topic which requires extensive critical analysis broken down by topic.
If I had to summarize, "why", then here it is how it would go:-
1. People need a fall fall guy for everything. They'd rather blame a politician for water pollutions than the industrialist who oversaw this.
2. Zardari has a tainted past. Whether we consider him guilty or not, and whether he has spent 9 years in prison, he has a tainted past. People can't get over it.
3. Nobody ever imagined him in the throne. It was beyond everybody's comprehension.
4. Politicians are the easy-to-blame people after the military's guardian image, the bureaucracy's secretive working and the corporate class's "beuatiful" image in the eyes. It does not mean that they don't deserve blame, they don't deserve blame for everything.
5. People themselves have failed to rise and control their political futures. Whether it has been hijacked by a military-mullah alliance or is a hostage to feudal oligarchs, the fact of the matter is that people have themselves failed to create a representative system of governance.
6. The middle class and upper middle class who represent the majority of the Pakistanis on the interweb are pathologically averse to political participation, averse to debate, tolerance and dissent, have never put in effort to improve the system and the religious among them will use the knee jerk reaction of khilafa/sharia as a solution for everything from clogged sewers to thunderstorms. This is a sweeping generalization but I have reached this conclusion after years of study and observation. There are signs of improvement, but it's a small star in the sky. Let's hope for the better.
7. Zardari has himself tried to axe his own foot many a times now. Unlike the previous junta which axed itself with the CJ case and emergency, Zardari hasn't literally cut his foot but has come close to it after he became the bone of contention in the restoration of the CJ and many other events. His advisers have created a circle of idiots around him but there are signs of improvement.
Anyways, your conclusions are highly debatable and social generalizations are completely naive, especially for they do not have a historical or anthropological argument behind them.
Mod please close this thread, you know it will get ugly soon.