I'm not sure what it is about meteorites that attracts "interesting" people, but we in the meteorite community get more than our fair share of characters.
If somebody came into the Refractor forum and posted a photo of their new refractor that was not a refractor at all, I would expect helpful members of the forum to say "Hey, that is not a refractor, it is actually a dobsonian reflector."
The erroneous poster would then say, "Wow, I didn't know that, I was mistaken in my terminology, thanks for clearing that up!"
But not with meteorites. They will post a photo of an obvious Earth rock and will stubbornly resist all attempts by others to educate them. They will insist their piece of hematite or magnetite is a meteorite until their last breath. They will usually get hostile to anyone trying to correct them. This happens more often than not. It's weird and I cannot explain it.
That is why I rarely try to educate such people any more - they almost always shoot the messenger. Maybe they are invested in the idea that their rock is worth a ton of money and will make them rich. I just don't know.
The reason I tried with this person is because he was so prolific and was filling up the forum with misinformation. I am grateful to the moderators for removing him, since it was apparent he had no intention of listening to reason.