I think it is, however the dream among educators of an “AI detector” is so strong that they’re willing to believe “these guys are the ones that cracked the problem” over and over, when it’s not entirely true. They try it out themselves with some simple attempts and find that it mostly works and conclude the company’s claims are true. The problem though is that their tests are all trying to pass off AI-generated work as human-generated—not the other way around. Since these tools have a non-zero false positive rate, there will always exist some poor kid who slaved away on a 20-page term paper for weeks that gets popped for using AI. That kid has no recourse, no appeals—the school spent a lot of money on the AI detector, and you better believe that it’s right.