With the Reddit thing, it'd be easy to miss what's going on on StackOverflow. Basically:

1. Site owners allowed LLM-generated content.

2. Mods are on strike.

3. Also, back in March it turns out SO turned off the Creative Commons data pipe, which backs up the site to the Internet Archive, in an attempt to confound using SO for training data.

https://www.vice.com/en/article/4a33dj/stack-overflow-moderators-are-striking-to-stop-garbage-ai-content-from-flooding-the-site

https://meta.stackexchange.com/questions/390106/moderation-strike-update-data-dumps-choosing-representatives-gpt-data-and-wh