How Can a Mining Pool Inadvertently Facilitate Selfish Mining?

A large mining pool, by concentrating a significant portion of the network's hashrate, can inadvertently make the network more vulnerable to selfish mining. If a pool operator or a coordinated group of miners within the pool decides to execute a selfish mining strategy, the sheer size of the pool's hashrate can push the collective past the profitability threshold.

The pool's centralized control structure is the point of vulnerability.