Thanks for noticing that. I am not finding the quote "And that's just for repeat borrowers (by sheer chance, none of the 20 random loans was from a first-time borrower)." in the blog post now.
I did take a look at the borrower profiles that were linked below the photo collage, and the majority of them were indeed first-time loans. These can be identified in that only second and subsequent loans include the link "View previous loans" below the on-time repayment rate displayed in the profile pages.