It's a pretty cool fan experience when you're at the games. I took my kids recently to their first Braves game and they really enjoyed the chant. It actually may have been there favorite part. As with all things like this it's important to ask who is really offended and why is it offensive. Is it just a small percentage of midwits feigning offense or is it truly offensive to that demographic.
i'm not personally offended by it and don't think it's a big deal.
my enjoyment, or the enjoyment of my potential future children, means very little if it legitimately bothers people, especially if they're within that demo. people go to other team's game and enjoy them just fine without it. i think our fans can adapt. in the grand scheme of things, i think you're better off not bothering even one person than worrying about how fans will enjoy games anymore.