I have seen what you talked about, but I believe most of it exists for two reasons.
First, MMM is very blunt in his blog posts. His wording is matter-of-fact, he uses much profanity, and he frequently speaks of punching people in the face. I think many people, myself included, take the liberty of some of that MMM bluntness when we post in the forum.
Second, and I think this is the big one, is when someone comes in and posts a question or shares an idea that is so unbelievably at odds with MMM's philosophy. I get that we are all individuals and that this is not a religion. But if you are posting on the MMM forums, I would think it would be a prerequisite to have read at least a good portion of MMM's posts. Judging by some of the posters in here, that is not the case. As such, they usually get flamed for it.
Unrelated: OP, there is no way you are 14 years old.