Dunning-Kruger Stamp

If you don't know what the Dunning-Kruger effect is: [link]

“Only ignorance! only ignorance! how can you talk about only ignorance? Don't you know that it is the worst thing in the world, next to wickedness? -- and which does the most mischief heaven only knows. If people can say, `Oh! I did not know, I did not mean any harm,' they think it is all right.”
― Anna Sewell, Black Beauty

Clueless Morgan: It's a sign! This is a curséd place!
Long John Silver: Now there's an informed opinion.
- Muppet Treasure Island

I was prompted by a few idiotic comments I've seen around the Internet lately, and reading an article that pointed out that many social networking sites try to show you content and updates from your friends that you agree with, creating a bubble that will keep you coming back to the site. The prevailing opinion seems to be that unapologetic volume trumps knowledge or expertise, and nowhere seems worse than that than America sometimes.
Too often I see comments that form the first link in the chain of denialism: "I don't have to apologize for being wrong OR an ass." Or its sister version "I have the RIGHT to be stupid!" The brilliant opportunity to learn that the Internet creates is almost always and immediately overshadowed by the tribalistic tendency of humanity to not want to know it in the first place. We're not only happy in our ignorance, we will viciously attack attempts to take us out of it. "Get out of here, you elitist! You and your facts and learning and smarts! Burn them!"
Anytime someone is pinned or rebuffed, their sniffy, ready-made excuse is "Well, that's just my opinion. I don't have to apologize for my OPINION." Yeah? And who says your opinion matters in the first place? How is it different than the other million some-odd opinions that are probably just as misinformed? It's not like we're short on it in this day and age.