Central bank autonomy

Why are international donor agencies like the International Monetary Fund so supportive of autonomy for the central bank? According to an IMF working paper titled Central Bank Autonomy: Lessons from global trends a large body of research has suggested that central bank autonomy (CBA) may have significant benefits for macroeconomic performance. CBA may help countries achieve lower average inflation, cushion the impact of political cycles on economic cycles, enhance financial system stability, and boost fiscal discipline without any real additional costs or sacrifices in terms of output volatility or reduced economic growth.
Another paper uploaded on the IMF's website attributed to Tonny Lybek titled Central Bank Autonomy, Accountability, and Governance: Conceptual Framework argues that basic consistency needs to be ensured between the exchange rate and monetary policy. If exchange rate policy (including choice of regime) is not solely the responsibility of the central bank, the bank should nevertheless have sufficient authority to implement monetary policy within the constraint of exchange rate policy (eg, in a fixed exchange rate regime, to support the exchange rate as the specific target of monetary policy), and should be the principal advisor on exchange rate policy issues (eg, as to whether the current regime is most suitable for the fundamental price stability objective). In the event of a conflict with the government on exchange rate issues, the conflict resolution procedures should come into effect.
The objectives of these research papers is not to undermine the authority of the Ministry of Finance but to ensure that monetary policy and associated exchange rate policy is in the greater national interest and able to cushion the impact of political cycles on economic cycles when ever required.