I, personally am not certain either...I'm really not sure if it'll make an impact either way. The only thing I DO know is that there are a lot of rescue people who I know personally who will not adopt out pits or pit types for fear of the people who are interested in them.
They figure it's better to put them down than to have them possibly stolen for lord knows what. While I disagree with their stance I share that to say that things like this completely reinforce their "fears" so to speak.
Beyond that I'm not sure either direction I guess I can see a little bit either way but for the most part if it DOES make it harder it'll be people with that mentality or using that mentality against us...Peta types pushing in the "you're selfish" direction or what have you is about all I really see of it though-personally. Though I've not specifically put thought into it.
If I come up with something intelligent I'll share.