I don’t believe Sindhis will push for secession from Pakistan. While some Sindhis may advocate for an independent Sindhudesh, there hasn’t been any significant uprising in Sindh. However, the situation is entirely different for the Baloch and Pashtuns. They are distinct peoples who did not even vote for the creation of Pakistan in 1947. The India-Pakistan or Hindu-Muslim conflict is not their concern. Moreover, an independent Balochistan could benefit the region, much like independent Bangladesh has. An independent Balochistan could maintain favorable relations with India, similar to how Iran and Afghanistan do.Intrigued, but commendable that your line of thoughts are consistent whether its Kashmir or Balochis - the will of people to prevail.
But Sarmad Bhai, secessionist ideas are very enticing and easy to ripe and grow. More you accept, more will come.
Lastly, it’s important not to compare India’s secular democracy with Pakistan, which was founded as an Islamic state. As an Islamic state, Pakistan seeks to impose its version of Islam on the Baloch, just as it tried with East Bengal. The Baloch will never accept this, and the bloodshed is likely to continue as long as Balochistan remains a part of Pakistan.