Documentation, maybe. Tests and scaffolding, no way. 99% of my time writing tests is figuring out how to make this particular React component testable. It's a waste of time. It's very easy to verify that a test is correct, making them the ideal thing to use AI for.

Other than documentation (where I agree!), those are for communicating desired actions (primarily) to a machine.

A blog post is for communicating (primarily, these days) to humans.

They’re not the same audience (yet).