Mostly men. But not only.
Mostly white. But not only.
Reflecting decades later I think they were probably mostly insecure, and at the time I realised they were mostly only marginally competent.
"Only a fucking idiot would do that" meaning "I do not know what you are talking about but if I admit it I might look bad, so I will attack you instead"
Some times they were truly brilliant. I could call out some very famous project leaders (one of whom attacked me on a mailing list on a topic over which I was an expert and he was not. Deeply personal attacks) but I do not think it would be helpful. There are plenty of examples, and they are easy to find in old logs.
But times are changing and being a total prick to prove a point is not tolerated in the worlds I (mostly) move in now. It takes debate and reasoning to prove your point.
Should have happened thirty years ago. We lost a generation to fields where asbestos suits were not mandatory to participate. That was literally the advice for almost every forum back in the day "wear your asbestos suit"