They definitely had that and banned it, like 50x over. I've been banned in D&D simply for disagreeing with the group thought, even though it was a perfectly moderate point of view that I was espousing.
The best is the selective belief in citations. If a peer-reviewed article doesn't have the correct conclusion, there's something wrong with it.
Economics as a field generally disagrees with the D&D hivemind, and as a result, many posters flat-out deny the validity of economics. Yet, I called critical theory retarded shit that should be dismissed out of hand, and everybody freaked out that such a valid academic theory was maligned.
This is indeed the biggest problem with D&D. If the story/article comes to the "correct" conclusions, it doesn't even matter what the source is. Case in point, they quote MotherJones non-fucking stop. Even though MotherJones outright lies about their source material (which you'd notice if you actually follow their links). Long ago, when D&D wasn't even as bad as it was now, it was perfectly kosher to post stories from moveon and other places with clear agendas.
However, if you go even slightly against the grain in the D&D group think? Well I hope you have 20 peer reviewed journal articles to back that up, goon sire. They will find any reason to dismiss those too, by the way.
You know what though, that is the worst, but the second worst is simply the dogpile effect. Goons are so eager to silence wrong think, and the numbers are just so unbalanced that it's impossible to give differing opinions. You do, and your post is immediately burried under 3-4 pages of people calling you and idiot. Even the few who fight this and keep trying to address all the angry goons eventually get probated for 'being annoying'. Like seriously, look at the D&D bans/probations. The reason is usually just something like "go away" or "stop trolling".
Goons have literally gotten to the point where they don't understand how anyone could hear their UNASSAILABLE LOGIC and disagree.