Especially if you have an old reddit account.
I have seen too many posts of users complaining about being permanned on their reddit accounts for flimsy reasons. Some of these users have account that are over 10 years old on reddit. If you make the decision to delete your reddit account, do the world a favour by deleting every activity you made on that account. I mean posts, comments, chats, picture uploads - take your time to clean up - ๐. This could take weeks depending on how much data you have amassed with that account, but in the end it is worth it.
If you simply delete your account, reddit holds onto these data. They will sell it, use it to train their AI models, basically using your effort for free after permanently denying you access to their services. Seeing how reddit is trending towards a bot-only outfit, even some moderators are bots, you do not want your data to contribute to that cesspool.
They can fingerprint all they want with data that does not exist. Good luck to them. Please play your part in dealing with the reddit bots/moderators that have found a way to steal your data from under your fingertips without you even knowing.
As others have said, "deleting" your data from reddit does absolutely nothing to stop them using it. They're not actually deleting it, just hiding it, and they'll use it in whatever way they see fit and think they can get away with. You'd think it might stop third parties scraping it and then using it, but all your posts were already scraped within moments of you posting them, so retroactively hiding them doesn't achieve anything there either.
The rule remains: if you post something publicly, you cannot call it back. It will, or might, remain out there in perpetuity.
In perpetuity until the courts say it's not.
To assert that, you'd have to prove that every single copy of it, belonging to anyone, had been destroyed. If even one offline copy remains it could be put back online, courts or not
you only need to prove the one in reddit's possession which is very straight-forward.
Not really. For one, how do you prove that they have expunged it from every backup, replica and server? For another, what you seemed to be concerned about was whether your creation would be used to train LLMs or otherwise be misused, all of which can happen from an "unofficial" copy that was scraped before you tried to remove it.