Sure. But the point is that even if it’s a clown as PF, as long as the PM is doing his job properly, things should not go out of control. Eg like when the PF is doing a raw data approach, the PM must call out any deviations. If he does it accurately the PF will be aware and correct his mistakes immediately and always be stabilized. If PF does not react, PM should take control. Same case shall apply in a stall situation.