Personally I don't care to stay in a campground that discriminates against breeds. To me it's the same as human racial discrimination. Dogs that show aggression, fine...don't allow them in....or make them leave at the first sign of aggression.
I ask on the phone when making reservations if they have breed restrictions--if they do, I let them know why I will not stay there. The only exception is if I want to go to a rally that I REALLY, REALLY want to attend.
I want to make it clear that I (at this time) DO NOT own a breed that is on the dangerous list. I know, and have had, "so called dangerous breeds" and many were total love bugs. I have also had a dog or two that I had enough common sense not to take camping....they stayed home with a sitter or were boarded.