There is nothing logical about it. It's like a rehab claiming it's only logical for a drug addict to continue taking drugs even after going to rehab.
IMF programs are planned in such a way that if the plans are implemented, then you won't need a new bailout for decades, maybe never. Like India.
What's happening to Pakistan is the drug addict is an unwilling patient, so the rehab's decided if the guy stops taking drugs, he's gonna die, so bailout after bailout, and the rehab has no interest in taking more drastic measures cause of politics. Like the regent making sure the orphaned prince stays sick so he can continue running the kingdom.
The problem is each bailout makes the situation worse until the next bailout is needed and it just keeps getting worse and worse after that if the plans are not implemented.
There's nothing logical about the waivers, it's a "no-choice but to grant waivers" situation 'cause the patient is hopeless and at least he's gonna live longer by taking drugs.