FWIW, Slack Overflow banned ChatGPT not long ago.
Here, ChatGPT assistance is acceptable as long as any text generated by ChatGPT is referenced as ChatGPT generated.
Also, there are tools becoming available which can detect text generated by AI. I am confident that these AI-text-generation-detection tools will be available as a Discourse plugin sooner than later.
If not, I will modify one of our detection plugins to add this check when members post replies, but for now, we are still in the experimentation and learning phase for OpenAI and ChatGPT capabilities in providing assistance in tech forums.
See also: