If someone were motivated to emphasize this event because of the hypocrisy of it, then they would be even more motived to highlight the hypocrisy of other, more important events. Corrupt policemen, war crimes, and other impending and repugnant events would be in the limelight.
Which leads me to believe that people stigmatize the Catholic Church and homosexuality simply because... it's homosexuality in the Catholic Church. Maybe because they don't like one or the other, or because it's humorous, or shocking.
And if it is more shocking than the other problems in society, then clearly we have been numbed, and our priorities are totally fucked.