There are LOTS of illustrations of LOTS of things on such threads.
The discerning and wise learn more than the undiscerning and unwise.
In most respects, it’s a somewhat intensified subset of normal reality in some contexts on such matters.
I’ve been impressed and encouraged at the discernment many folks FREEPMAIL me with . . . many times, I hadn’t noticed the interesting and perceptive points they articulate from such vigorous exchanges.
I doubt Paul on Mars hill was equal to a British afternoon tea with cup raised and little finger in the air.
Certainly Christ railing at the white-washed tombs, vipers, sons of satan RELIGIOUS RULERS 2000 years ago was not very polite discourse in a lot of respects.
I find vigorous exchanges often more real and candid than things that are layered in umpteen layers of obfuscating, inoffensive wimpy statements and the like.