The problem, and why people get annoyed is this.
Poster 1 - here's my opinion/article that says this.
Poster 2, 3, 4, 5 - Oh that's actually not true, here's a long, sourced comment explaining why.
Poster 1 doesn't reply or acknowledge at all.
Poster 1 (12 hours or 2 days later) - Here's my unchanged opinion and another incredibly dubious source I found that agrees with me.
1150 pages in people get bored of it from the same half dozen posters and recognise that they aren't trying to have a debate, or learn more.