YC is the company that (to this day!) has Yotta - a borderline scam to take advantage of financially-illiterate people - on their website
after the whole thing has completely blown up and most customers lost their savings:
https://www.ycombinator.com/companies/yottaOh, and now they have their own rendition of the "Aviator" game often advertised by unregulated Eastern-European online casinos: https://members.withyotta.com/moonshot/. You can't make this shit up!
I wrote off YC after this. Maybe early on it was a mark of quality and good due-diligence, but now I'd argue it's the outright opposite - if it's funded by YC, buyer beware.