Ya gotta hand it to them. CNs get entrenched with their golden handcuffs and extend on inferior contracts while FOs don’t get BPP when that happens. So things stagnate but with a top heavy force who works cheap and new guys who work cheap.
If you have a failure rate above 5 to 10 percent your screening assessment system sucks. And it’s not too hard to switch seats after doing the task for a few years; at least if you’re paying attention and taking the responsibility you should be taking.
To the OP it’s pretty easy. They are the ones working in the left seat of a major US carrier and leading a generally happy life in a happy place.