I get the threads, for example a dh / dp partner being a dick and some posters becoming riled up on behalf of OP. That's understandable that some mners will become upset/angry. But then there are some who take it so personally as if it's their problem.
I can imagine them coming away from the site feeling angry and brooding to return later and have another go at the OP or other Mners because they can hide behind a keyboard.
Many Mners are helpful and understanding whilst others are complete arseholes and looking for a fight although there is no reason to do so because the original problem isn't theirs to start with.