I'm similarly surprised we haven't heard of a AI augmented fuzzer that's been unleashed on random domains to just "try shit out." Seems like a good way to find weird little bugs. Then again, the scope of the "problem" is so massive, and the "rewards" (shit to flag as "yea check this out more") so vague, I don't even know how you'd begin.
Or the curious one. Just make a point&click version of such vulnerability scanner and post in on Reddit; you'll have half of the Internet scanned in no time.