There’s also no credit-score check in the US for job applications, so no, it doesn’t “lock people out of finding work.”

Employers may use credit report information to verify an applicant’s identity and to look for signs of excessive debt or past financial mismanagement. Source: https://www.experian.com/blogs/ask-experian/why-employers-check-your-credit-report-and-what-they-see/

Employers discriminate very openly against applicants for a variety of reasons. Nepotism is one such way, AI filtering is an emergent way - there are plenty of other practices.