I don't know how one would define toxicity for the purpose of this challenge, but I am certainly baffled as to how people accuse StackOverflow of being a 'toxic

I don't know how one would define toxicity for the purpose of this challenge, but I am certainly baffled as to how people accuse StackOverflow of being a 'toxic wasteland'. Some people can be a bit curt or even rude with poorly worded or low-effort questions but I can't say that's something I see there in even 1 out of 25-50 questions I see. I suspect that some people get frustrated when they first try to ask questions and get rebuffed because they didn't follow the rules of the site. If you hop on there asking open-ended opinion questions or asking something that can easily be found with search, then yeah it might get closed rather quickly. Doesn't make SO a toxic community by any means.