It *should* have filtered him out but that was a different failing.

1000 hours in GA might have scared him... either scared straight or maybe into quitting. I knew people who did both.

The guy did not understand his own limitations, somebody with his natural aptitude attempting to perform a brutally complex coupled straight-in ILS should not have been shooting the breeze with the FO, he should have been sitting up straight, laser-focused on managing his airspeed (since the AP was doing everything else).

Also the colgan crash was the chickens coming home to roost... for decades the regionals wouldn't touch pilots with less than 1000-3000 hours, but they got a little shortage going on and suddenly decided (some of them) to break their own rules. The fed just intervened to remove the temptation to make bad choices.