Being advanced stock is literally being given a loan of that stock, and the primary motivation of credit scoring is to be able to judge whether someone will default on their loan.

Admittedly, that only defers the question to, "Does credit scoring accomplish its primary motivation?" But you could become a loanshark millionaire if it turned out that people with low credit score were equal or better borrowers than people with high credit score, since the existing financial industry isn't serving them as well.

Do you require evidence for every common sense judgement you make?