Thanks for the detailed answer!

I think in general I can see that startups are exploiting the interviewing process itself as an arbitrage to get smart people in. Large companies to some extent are very set on the interview "loop" and would go through the whole assortment of their test suite irrespective of who it is, maybe they can afford to and they may even have to at scale as a process discipline to avoid false positives. But this is a clear advantage for startups hiring since by their nature itself get lower inbound so they can customize their interviews to either make it more specific or remove certain rounds altogether depending on the signal they get from the candidate.