Nah, they actually never prototype anything. They just vibe-code apps and deliver that. Those aren't their prototypes; they're their products.

Which is hilarious, really.

Extreme prototyping is what I'm doing: coming up with wildly different variations of the same app, to test out entire architectures, designs, and tech stacks with AI-generated code.

The result is not a deliverable. It's the dynamic design document.