GERD is a complex condition. For some people, it is triggered by foods. However, in my case (and looks like even in your case), foods in general don't trigger it. Other than the trigger, some foods may create less acid and therefore can help, but in my case even simple foods create enough acid to cause symptoms.
Kaufman diet is good for those whose throats are hurt and burning due to reflux - the less acidic the diet, the less it will trouble you in your throat - so less acidic foods are better for helping heal your throat.