Kiyani isn't just wanting people to take responsibility for no reason. The mess in Sindh was created by the political parties on regional gang basis, sort of you close your eyes and I will make a gang militia in this 30 mile radius and you do that on the other 30 miles and we both make money through drugs, ransom, political assassinations, etc, etc, and to remain in power by forcefully controlling the vote bank.
So when political parties are involved in creating such a big militant network, he doesn't want the army to take the bait and walk into a political firestorm. If he just did that, then the political parties who'll lose their gang members, killers, terrorists....will bash the army. I think the army has gotten smarter so they want the political leadership to decide, announce the gov't's will and pave the way. Without political support, it'll be destructive for the already-falling reputation of the PA.
Similarly, if the SWAT and some of the FATA areas didn't have the political backing, the army would never have been able to clear that area and have goodwill left. They are trying to do the same in NW as well. First run an information campaign, create political and otherwise sympathizers and then do the operation. Otherwise ops like these will result in more terrorist being born than the dead.