> Corollary: how do you get someone who has partaken of the kool-aid to recognize that a practice involving their pet dogma is bad?

What leads you to believe that just because you disagree with something then it's automatically a dogma and bad? If you're trying to debate the merits of an idea and you start your argument by dismissing and discrediting proponents, regardless of what they might say or how weak your points are, and to make matters worse you admit the proponents of said idea invariably win over your arguments, doesn't that suggest that there's some likelihood you're in the wrong?