Earlier quoted context omitted.
Why can't we use some sort of metadata tagging system instead? Isn't this what the person is indirectly trying to do: declare some simple tags, such as "US politics", but indirectly via a bunch of garbage fed into an auto-tagger?
Not to put too fine a point on it, but (1) we did once[1], because you're right that it seems like an obvious fit. But in practice (2) it got absolutely crushed in the market performance-wise by more sophisticated algorithms like Facebook's and Google's (Amazon plays in this world too, though they have an easier space to search). It turns out that the fundamental game in the ad world isn't serving ads that site admin…
As soon as it can be gamed, it will be gamed. It's just the scammy nature of it all. Now that it's "AI" generated content, it will get to enshitified almost immediately on any system that is created