Content you have voluntarily published under the terms of a platform, which presumably grants StakOverflow all commercial rights, won't fall under GDPR. You can request your personal information to be deleted, not the content you produced under contract and which you no longer own.

There are legislations where you always retain the moral rights to anything you produce (those cannot be waived) and the authors here could argue that this partnership is negatively affecting their moral rights.

I don't think it's been tried before but that sounds like a possible legal path to taking down the content

If you open source your work you can't just pull the content then sue someone using the content you gave them a license to use due to moral rights.

No, in those legislations you absolutely can, the moral rights supersede the license (not that I'm necessarily happy with that)

In the case of open source software, it could be some use which reflects badly on yourself.

Here in this scenario, the angle could be that using it for training in AI could affect the integrity of the content produced

Ye, this sounds reasonable. Sad.

Not sure how GDPR applies to content you wrote using another service. GDPR does not apply to the content you wrote on Facebook, it only applies to your personal information Facebook is collecting while you write said content.

GDPR does (fortunately) not grant the right to dictatorially sabotage a tree of content at the hand of one user, if exercising this right is in conflict with other peoples interest.

In the case of StackOverflow post are a contribution to the collective knowledge base rather than personal data. If your posts do not contain personally identifiable information, StackOverflow can easily argue that the content does not fall under GDPR’s scope for deletion based solely on personal data grounds.

Does GDPR apply to non-personal data that you've generated?

Stylometric analysis can be used to link texts you write to your identity, even if written anonymously. These are grounds to claim the texts you write are inherently personal. See https://en.m.wikipedia.org/wiki/Stylometry

Pretty sure gdpr requires you write to them first, and if they don't comply, you write to the data commissioner. E.g: https://ico.org.uk/make-a-complaint/

Not sure why this is getting downvoted. This is exactly what GDPR was made for. Good thing I have only like 2 answers on SO, lol.

GDPR allows you to get your personal identifiable information removed, not content.

And GDPR is an eu thing not a usa thing.

It's annoying that people treat GDPR like a magic word that lets them do whatever they want. It only covers personal data -- as in, your name, address, phone number, email, any other identifiable information, etc.