I was thinking this but if they do it the right way, nothing to worry about. I think it works fine on the DS from what I have played around with. I wouldn't worry too much. They seem to be blowing this way out of proportion.
I honestly don't see it doing that much harm. I mean I feel like they can actually make it safer having people just trade instead of hunting in localized areas. Like the people who do the scammy stuff or plan on jumping people hang out neat good Pokemon so this way, you can trade for better ones instead of going into a risky area.