on the other hand a sick monkey* ( your words ) will do the job just fine 99% of the time
And the other 1%? That's the difference between wearing a white shirt to work and a grow-bag, and paying for your flight-training and being selected for it.
Provision of the rolling airframes under PFI is one thing, what we have now is something very different.
*I hope the monkey isn't sick.
Stick monkey is of course pure banter