A few days ago I deleted all of my posts and comments from reddit, but today they somehow reappeared.
I don’t know if that’s a bug or the admins themselves are restoring content, but I’m sure they’d have incentives to do so considering that they make money from your content, whether that is from generated clicks to the website or from selling those data to other companies to train AI models.
The word seems to be that reddit is claiming that they don’t have the ability to do this after your account is deleted. They need you to make the GDPR request for deletion first, and then only delete your account once all your content is deleted.
I’m pretty sure that this is not GDPR compliant (they’d have to invest the effort - at their own expense - to find all the now unlinked content that used to be part of your account) but if you haven’t deleted your account yet, you might have less of an uphill battle in getting reddit to comply.