A good point, but I'm not talking about a few flaws here and there. I'm talking about a churlish attitude, that takes a shallow view of a subject, without even considering that deeper study might completely change their point of view. Such people tend to be uninterested in actual discussion on that topic, just invective. They create the most absurd straw men out of their cursory study, then scoff when someone tries to "explain it away," by shedding light on the subject.
But, yeah, it's also possible that a dedicated anti-gunner might find a mistake here or there in their gun rights episode.