>Being bad at live coding doesn’t mean you’re a bad engineer. It means you’re human.

Except humans can do well at live coding. Especially for trivial cases like the start of the article (sum . filter even). Yes, companies are looking to hire humans as opposed to ChatGPT, but they are looking to hire a subset of humans. Just being human is not good enough. Failing this test might not provide a reliable signal, but passing it does. If you are getting stressed over simple question or existing stress is impairing your thinking enough to not answer simple questions that seems like an issue to me.