No one is born Christian. Period, end of story. There are people who are born with psychological and even physical traits associated with transgenderism. It also exists in nature in other species. Thus, it's clearly part of the natural order. Why should Christian belief be respected and transgender identity be demonized? People are indoctrinated into Christian belief, which conservatives claim is being done with transgender identity -- which is, of course, 100% untrue. It is being done with Christianity, without similar complaint, and even with associated tax incentives. It appears that transgender identity is innate to a person, such that after years of therapy and counseling, people end up opting for a surgical solution to achieve inner peace.
OTOH, Christian belief is fluid, voluntary, and can be unlearned quite easily.