Judgement is necessary to decide whether a given decision reflects good judgement. The regress is infinite. And specifying what constitutes good judgement doesn't solve the reflexivity problem of knowing if a different specification also reflects good judgement.
We should judge decisions based on decision quality, not in retrospect. So yes, in aggregate we can pick where there was good judgement, but we then still need to use judgement to determine what parts made the judgement good.