That's entirely different.
ARIA scanning tools are things that throw an error if they see an element that's missing an attribute, without even attempting to invoke a real screenreader.
I'm arguing for automated testing scripts that use tools like Guidepup to launch a real screenreader and assert things like the new content that was added by fetch() being read out to the user after the form submission has completed.
I want LLMs and coding agents to help me write those scripts, so I can run them in CI along with the rest of my automated tests.