It looks like they’re undeleting posts which means you won’t be able to go back and delete them again if your account is gone. I checked today and about 30% of my deleted posts were back.
Reddit will profit off your past content if it stays up in its current form. As an alternative to deleting, I’ve seen people suggesting editing your old text posts to be gibberish so that it will screw with the AI models that scour Reddit.
On stuff coming back? I just checked and I had one old comment pop back up. So wild. Seems quite random
Some people say it’s how the servers refresh or something when a bot is used. Just cross curious.