Any discussion on any forum in the early to mid 1990s you would often see a comment "don't flame" (aggressively argue or insult). Argumentative people were not

Any discussion on any forum in the early to mid 1990s you would often see a comment "don't flame" (aggressively argue or insult). Argumentative people were not seen as normal by people on a BBS or forums of the time. Even casual swearing was not tolerated. Both of those behaviours are now very common and accepted or seen as normal or worse yet not even noticed as a problem.