This. All the best places I have worked at in my career have basically followed this formula. And in fact these questions are fairly similar to the original YC

This. All the best places I have worked at in my career have basically followed this formula. And in fact these questions are fairly similar to the original YC application, with the exception that the question about your favorite tech stack was separate from the question about the coolest thing you've built. In contrast, the places that have done tech interviews have generally been awful to work at. Less intelligent people, less interesting work, worse management, etc.