Is there a future where people stop using Stack Overflow, so ChatGPT doesn't have answers to new programming issues and questions to train on, and so it is suddenly blind to generating new useful answers?
It won't be such a night and day difference. LLMs can still train on official and unofficial docs (someone also mentioned that LLMs can read source code?). But the results will be worse in the absence of the additional Q&A style content, I would think.