No, it is not that toxic communities produce better content, it is just the fact that encyclopedic content websites tend to atract borderline autistic people obsessed with some subject who sound like absolute jerks for everybody but themselves.
Name calling of "borderline autistic" and "absolute jerk" would be met with fairly quick community moderation and condemnation there or on Wikipedia. Meanwhile, calling someone autistic as either a pejorative or an insult here (or reddit) is seemingly acceptable and is being defended.
Autistic and borderline are barely perceived as positive words in our society so I can follow the argument of insult when you describe wikipedia authors as borderline and autistic. Although I see that you did not mean to do harm with your sociological background.