That's totally irrelevant. I didn't say that it didn't exist. Even if it WERE being advertised openly, there'd still be less of it around than plain old adult

That's totally irrelevant. I didn't say that it didn't exist. Even if it WERE being advertised openly, there'd still be less of it around than plain old adult prostitution. And as you point out it's NOT being advertised openly. So it is in fact relatively hard to find. Therefore these guys go for the low-hanging fruit, because as far as they're concerned all prostitution is human trafficking (one of them says exactly that in the article). In their propaganda, it's in their interest to talk as if they were going after children in bondage... except, of course, when they give a count of their cases. That number is going to include everybody.