I've met a very small fraction of pilots that can't function in their seats. I can count them on one. hand. That, out of decades of experience. Perhaps the expert who knows better can enlighten with experience, instead of mindless, sniping from the gutter.
Very often, when we find lapses in either seat, we can trace it to training, evaluation, and standardization.
There are a great many pilots I've met who are in no wise impressive, and yet they do their jobs.
The standard to complete a checkride and sit in the seat is "satisfactory." I've never seen a legitimate pilot evaluation form that includes "impressive" on the grading scale.
I used to fly with a pilot who does evaluation for a living: his highest praise was "doesn't suck."