Besides the immediate public good it creates, it also strengthens their long-term case. Back when the region was under military occupation and constant resistance, the instability was used as an excuse to undermine their demands for autonomy, development, and political inclusion.
Now, with Ogaden being the most peaceful and stable part of Ethiopia, they’re building functional local governance, attracting investments, and driving economic development. On top of that, they’re able to reach out to other regions and even foreign partners, strengthening both diplomatic and economic ties.