I had poor credit from student loans and Affirm was very generous to me when other banks weren't. Affirm helped lay the foundations to rebuilding my credit. They've been good for at least my case
Does Affirm report paid-off loans to credit agencies?
There's not a single Affirm tradeline on any of my credit reports.
https://helpcenter.affirm.com/s/article/reporting-to-credit-...
Yes - we gave people with poor credit mortgages to buy homes, and yes that did lead to the financial crisis, but not because they were poor and had bad credit.
It was because the loans were very large, and were backed by the supposed value of the home the person was buying. Then packaged in ways that hid the risk until the last minute - making those assets toxic when the housing bubble popped.
For small personal loans, there are not the same sort of systemic risks.