This was what I was thinking. There were lots of jerks on those forums[^1], but I didn't see many racists. Frankly, I don't know how anyone would be able to ascertain others' races in the first place.

[^1]: as far as I can tell, no one was welcome to ask questions unless they could first prove that they were smarter than everyone else about computing, in which case you wouldn't actually need to ask questions in that forum in the first place