I think we'd need to see these things get a lot more reliable for them to be viable in this use case. This seems like a "leaky net" as opposed to some more deterministic strategy (e.g. grepping large lists of keywords, or parallelizing the task over thousands of human analysts). When you're looking for a needle in a haystack you need to inspect every leaf and stalk.

So should we put copyright through the shredder on the wager that somehow generative techniques will find applications for mass surveillance?