All I've seen that person do constantly and in many posts is

- insulting people
- adding fuel to the fire
- posting lengthy articles containing further links
(sometimes even food-related - I give him that)

- accusing others of being this: https://www.urbandictionary.com/define.php?term=troll - well, compare to the above.

I've hesitated for a long time to post this, but to me, those posts
render rfc mostly unpleasant.

Go ahead, flame me now - I'm only a humble googlegrouper after all. ;-)

Bye, Sanne.