Does a Pool Operator Benefit from a High Number of Stale Shares Submitted by Miners?

No, a pool operator does not benefit from a high number of stale shares. Stale shares indicate inefficiency, which reduces the pool's effective hash rate and, consequently, its block discovery rate.

This leads to lower total block rewards and lower fee revenue for the operator. Furthermore, a high stale rate leads to miner dissatisfaction and potential loss of hash rate to a more efficient competitor.