I fell through at that stage as well, which I think was surprising only because their value prop is connecting you to YC startups. I'm a former early employee at a YC startup having contributed to nearly half of its codebase and other YC startups constantly attempt to recruit me.

Oh well, I'm at a non-YC startup now and very happy. I guess the discrepancy lies with Triplebyte selecting engineers that Triplebyte wants, not what is actually representative of what YC startups want. Overall it's still probably a decent signal—you'd have to expect some false negatives here and there (and I'm not a rockstar dev either).