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.
I’m mostly a lurker so haven’t made too many posts and probably less than 100 comments in the last 6 years on Reddit. But I’ve thought about going back through all them and editing them to promote Lemmy in someway.