I'm sure they're effective to some degree in terms of recruitment numbers. What I was alluding to in that comment was that the current campaigns likely won't dramatically reduce the number of "horror stories" we hear - which is the crux of the entire issue. The people that are the antagonist in those horror stories tend not to change their way's based on social media movements. Whereas, the people who are interacting with and encouraging those movements would likely never find themselves in the antagonist shoes anyway. It's a very small subset of the population that would actually see those movements and decide to change as a result, and that's better than none, but it's certainly not what I think most people supporting those movements wish to see as a result.

Edit: grammar