Stop being so defensive about breast feeding.
We are all adults and can have a civil conversation. We don't have to talk down to each other just because we don't agree! I personally will cover if I'm in public but If you breast feed without a cover good for you, if you breast feed with a cover good for you, if you go to another room good for you, if you formula feed your baby good for you! It's time to stop downgrading mommas. Whatever makes you comfortable is the way to go!