This would probably only affect the people with the worst credit scores I imagine. I just don't see a ton of 800+ credit score people deciding to spend 5 payments of $20 for a pair of $80 shoes.
replies(7):
I can see a future where a BNPL loan is not offered if the signals the checkout page collects indicates wealth, since they don’t have an issue of cash flow stopping a purchase. Imagine a loan that has a credit score maximum, not a minimum.