Yes, this is an important point. Insert the survivorship bias plane picture that always gets posted when someone makes this mistake on other platforms (Twitter). We can be accurate at detecting poor AI writing attempts, but not know how much AI writing is good enough to go undetected.

Someone should run a double blind test app, there was an adversarially crafted one for images and still got 60% or so average accuracy. We all just can glance the data and detect AI generation like how some experts can just let logs run and say something.