Agreed. But it's also indicating the current crop of AI generates certain patterns that are detectable.
What if it advances to a point where people can't? Chances are that's anywhere between "we're already past that point" and "could be a decade or more away" depending on the type of work.
Imho AI is ultimately just a tool. Use where it improves things, avoid where it doesn't. Right now companies seem to try & shove it everywhere. Which clearly isn't working.