A central bank that instead washes its hands of what is happening on the markets can be useful to others, perhaps for those who succeed in profiting from market instability, but it risks compromising the objective of price stability.
To allow each institution to operate in a balanced way, within its own responsibility and without exceeding it, it has to be assigned a precise task, given the independence to pursue it, and the obligation to account for its actions. This means that the institution must have the operational capacity and necessary autonomy to achieve its goals.