I'm one of (if not the) original architecture astronaut, so you may not want to listen to me, but you're sliding from "architecture astronauts are bad" (true) to "architecture doesn't matter" (false).

Arguably, architecture is the only thing that ever mattered. Below the level of architecture you're dealing either with algorithms or API calls. Algorithms can be validated by tests and API calls can be validated by tests and the type system.

But architecture is the one thing that could make or break a project and that you can't test for ahead of time. You either know how to create a good architecture or you don't. In fact, the whole point of the Spolsky's Architecture Astronauts' essay is that bad architecture (and bad architects) are a big problem.

AI works amazingly well below the level of architecture, but (I've found) it's not very good at architecture.