Yes....and it appears that some people are sexually attracted to children, others to dogs, others to horses. And the point is? You don't need a "reliable, consistant test" to find out what perverted sexual behavior is. A brain will do. At least in most cases.
There is a difference between opinion and fact. Facts require objective tests. Opinions are purely subjective and often have no empirical evidence. Substituting opinion for objectivity is unethical.