We don't have to get into a debate about. I take it then that you dismiss their claims however, and actually have quite a reaction to it (based on the "burning" and antacid reference). However without debating ... I'm assuming you dismiss their claims based on your beliefs, your understanding of Protestant scriptures, some of your own reasoning (I'd guess the idea of "God" ever being a human being probably doesn't seem logically consistent with your own concept of what a "God" should even be in order to be considered a God) etc ... yes ?
Now contrast that with, say, the way you may view a Cargo Cult. Pick the popular John Frum. Would you take seeing a huge model of a plane made out of sticks and such as seriously as some of the claims of a Mormon ? You'd probably immediately recognize it as "Hey, that's just an airplane." Would you consider following John Frum in the hopes that you had goods bestowed upon you in your life ? Would you consider that these people actually were onto something ... that instead of just being a service man in an airplane that brought goods to the people, he was actually an incarnation of a spirit vision, preparing them for a coming age, and that they had to reject all these aspects of their life in order to receive what he could bestow upon them, etc ? What would you say to such a person that was convinced that John Frum was actually a supernatural being, and how seriously would it even effect you ? In this case, instead of appealing to your own belief system, interpretations of scriptures, expectations of what a deity should even be, etc ... you'd appeal to what you take for granted as common every-day things: airplanes, white people, military operations, people named "John" who are "from" such and such a place. There would be no need to compare belief system to belief system, because you could easily see the origin or their own system as being ordinary and mundane and easily explainable.
For some unbelievers, apply that same principle. One could see the belief of a "modern", First World believer in Christianity, and even their insistence on a God encounter ... as nothing more than imaginative thinking and feelings and psychological or emotional needs. The result of a lack of critical thinking and knowledge of one's environment and the world. Their church is built with their own hands, their images are made with their own hands (crosses, garb, traditional implements, icons, incense), they often hope for the same things Cargo Cults hope for, for that matter: assistance, a better future, insight into and explanation of mystery. However it's all man-made. No reason to suspect the supernatural. It's just a modern, First World version of what humans have been doing for centuries, building upon the ancient mythologies that preceded them and attempting to reconcile them with advances in critical thinking and inquiry of the nature of reality around us: and a Cargo Cult is a simple example of something you can relate to and easily trace the origins of. So there is no need for some believers to compare one's beliefs and claims with some other set of beliefs and claims ... it's not a "for God or against God !" necessarily, just like your rejection of John Frum as a deity or spirit incarnation doesn't mean you are AGAINST John Frum. Rather, you recognize it as a false dichotomy: John Frum was just a service man most likely, that the locals didn't understand. You're not rejecting him or against him, you simply recognize he's not a "god" lol. It has no effect on you to believe or disbelieve because it's an irrelevant consideration. Well, for many, the claims of many believers aren't rejected with prejudice (like say, your rejection of Mormon claims I imagine). For some it's simply recognizing them as imaginative thinking, mythology of misunderstood phenomena, emotional and psychological needs, etc. They reference reality itself and seek more evidence in order to believe. I imagine it would take an extraordinary amount of evidence to convince you that God was a human being and that Moroni and the gold plates were legit. I also assume it would take an enromous amount of evidence to convince you that John Frum was an incarnated spirit. In fact, I may be willing to guess that no amount of supernatural and spectacular evidence would convince you that John Frum or the Mormon "God" was real ... because you could probably claim it was a trick of the devil and a test of your faith (I'm guessing). Well, the average unbeliever isn't even at that level yet ... there still is often a possibility they would believe, depending on what evidence could presented. So it could be argued that the unbelief of the believer towards all other "gods" is often stronger then the lack of belief of the unbeliever towards the very god the believer believes in lol. IOW, their minds may be more open to your possibilities, then your own is to others.
All of that to say ... each unbeliever is different, however for some it's a rather simple matter and takes little effort to recognize for them, as nothing more than magical thinking. Again: Cargo Cult.
