Turkey is a unitary state, rather than a federal one. That means the national government has direct authority over local politics. So even in a majority Kurd area, they may not feel equally represented at the national level. And the national government ultimately will determine policy at the local level.

Sure, they get to send representatives to the national congress, but because they are such a significant minority those representatives are pretty much powerless. “All politics is local.” We should have governments that reflect that.

Federalism is the way to go for ethnically and politically diverse countries in my opinion. It allows for national rule but local rule is also very important. But that would require changing the entire constitution.

https://en.m.wikipedia.org/wiki/Unitary_state

https://en.m.wikipedia.org/wiki/Federalism