If the OLA gathers enough strength in Welega to threaten a breakthrough toward Ambo or the capital Addis Ababa, the federal government benefits from the fact that Fano is putting intense pressure on the OLA's northern flank in Horo Gudru Welega and East Welega.
It forces the OLA into a grueling, multi-front war of attrition against the ENDF, regional police, and Amhara militias simultaneously. This structural bottleneck ensures the OLA remains trapped in a defensive cycle in its own homeland, rather than projecting power toward the center.
2. Exploiting the Internal Oromo Cleavage
The reason "Oromo radicalism" hasn't united the region against Fano is exactly what you noted: Oromia is politically in disarray. The central government has masterfully exploited the deep regional, cultural, and political divisions within the Oromo population to keep a unified mass movement from forming
Western Oromo/Welega - The historical bedrock of anti-centrist Oromo nationalism; heavily supportive of or intimidated by the OLA
Central/Eastern Oromo (Shewa & Hararghe) - Often more integrated into national commerce; deeply fatigued by conflict and highly wary of the economic devastation an OLA march on Addis would cause.
Because the Shewan and Jimma Oromo elites and civilian populations view a chaotic OLA takeover as a threat to their own stability, the federal government can continue to use Oromo police and regional forces to fight the OLA in Welega without triggering a wider popular revolt.The Jimma/Gibe Faction -The current political ruling class under the Prosperity Party; completely committed to retaining state power and preventing a Welega-dominated takeover.