God I hate the 'it's not my job to educate you/fuck you pay me' mindset of people like this and Nora Reed. It's such a condescending brush-off, and usually vastly overrates the value of their time, contributions and level of information.
If you're actually interested in changing someone's mind or informing them about something, you answer their questions. If you're only interested in hating on people or acting superior while insulting someone, you dismiss them like this - which means you've not only turned off someone who you could have perhaps persuaded to see your point of view, but if they do go and look up stuff on their own, there's absolutely no guarantee their information source won't contradict everything you're trying to get them to believe.
Yeah. That's the whole point of an argument--to show the other party why your position is better, and you do so by presenting your points while acknowledging and addressing each of your opponent's points as well. If you tell the person that you refuse to elaborate your stance, then you are
not demonstrating the superiority of your position and so, by extension, you have effectively lost the argument.
Imagine it from the perspective of a third person. If two friends were trying to convince you about what to do for the day, and one of them says "we should see a movie, and I
refuse to explain why," and the other actually presents the reasons why you should go to a restaurant instead, you're not really going to be convinced by the former, are you? In addition, this demonstrates their disingenuity, because somebody who actually felt strongly for their position would be interested in explaining it to another person, and furthermore would also
not want to present their position in a way that makes it appear indefensible by refusing to explain it.
Whenever somebody shuts down the discussion by this, either by refusing to continue or just banning the opponent, it doesn't demonstrate that the other person is "arguing in bad faith," it shows that these people are afraid of being proven wrong.