Yes, that does happen. Some people get argumentative and demand cites for obvious things, or for things that clearly cannot be cited - once in a while you’ll see someone demand a cite for the entire debate topic. But as you may be able to see from the next couple of sentences in my post, that’s not what happened in that thread. The problem was that David42 was asked to support some assertions of fact and he treated almost every single request for a cite as if it were a frivolous waste of his time. His starting point of view, from what I could tell, was that everybody knew he was right and wouldn’t own up to it. That obviously left him frustrated and did not help the discussion. In point of fact, David42 was asked to substantiate assertions like this one:
That one was pretty central to his argument in the thread. When asked for a cite, he said he didn’t have to because it was common knowledge. At least twice, he told posters to just ask three people for their opinions IRL instead of posting a cite. He said elsewhere that divorce rates increased after the introduction of no-fault divorces, and I can believe that. But “every time we change marriage a little bit divorce rates go up” is a broader and more specific claim that demands a cite, and he specifically asserted that lots of studies supported his opinion. But instead of posting links to the studies, he told people to ask their friends if it was true.