
Every system is racist because every system is human and humans are flawed. Credit scores include systemic racism and banks making calls based on their gut is direct practiced racism. Systemic racism is much easier to slowly over time work out as long as you recognize it. But the only way to stop direct racism is to take at least some of the power away from individuals.
The systemic racism like the structural one in the argument can only be gotten rid of if you entirely removed the concepts of loans. The problem with that is it is impossible. The majority of the folks who have attempted to outlaw usury and loans entirely are not really looked back upon fondly in a historical sense.
Other countries have them as well but the US has the most pervasive one.
Your credit score is based on the history of accounts and payments. If you have late payments it goes down. If you have many accounts for a long time in good standing it is goes up. A person who has many accounts and has paid off everything for 15 years might have a score of 800. Someone who has missed credit card payments and has things in collections might have a 550.
When you go to get a loan for a house or car the high credit score person might be given a 5% loan and the low credit score person no loan or a very poor rate sometimes over 20%. It can take years to change your credit score.