Khan lakhnawi sahib
From your intital post it wasnt clearwhether you are talkign about Jinnah Medical and Dental College seats for medical students (were there is no qouta for Punjabis) or the jobs in federal hospital.
However, federak qouta system works bothways, that is in federal institutions in Punjab you also get a qouta of 7.6%, apply there.
Secondly, you are in power in Sindh with PPP, why haven’t you scrapped the qouta so far? Bcoz Sindhis will not allow it. I would tend to agree that it does help the deprived as much as it should mainly bcoz of abuse of system. Its teh rich people residing in large cities but of rural background like Sindhis in urban areas who on basis of domicile will get seats.
And for your info qouta in federal jobs was not started by Bhutto in 1973, but by Liaqat Ali Khan for migrants. Thats why upians and cpians continued to come to Pakistan till late 1950s to get jobs.