While I agree that experience is not the only metric
Every "good" pilot gets better with experience
Every "Bad" pilot gets a little less bad with experience
On top of that It is always better to scare yourself !!!!less on your own in a little Cessna and swear to never do that again than to do the same as a captain in a 737.
There are capts in Europe that have never diverted, never done a GA, never have had to use the QRH in flight. They are flying with guys that are trailing twelve miles behind the tail. The only reason nothing happens is because these are extremely reliable machines