After 13 years, I had quit reddit 1st June 2023. At the time I joined beehaw (lemmy.world didn’t exist) and used the redact utility to delete all my posts/comments (we could at the time delete instead of mass editing.
I lurk sometimes some niche communities or go on reddit from google search, I never comment or upvote. I sometimes click on my user to see there was no comments/saved/etc.
Yesterday, randomly, I clicked on my username and saw all my 2023 and less post, 13 years of comments, I was like WTF, after 2 years, reddit decided to take an old backup or something and undelete all my comments!!!
As now redact only do mass editing and pretty slowly, I used something else, https://github.com/Jelly-Pudding/ereddicator/tree/main, followed instructions, it deleted ~3600 comments in less than 2 hours.
I’ll monitor from time to time if reddit keep undeleting them, to feed their AI…
When I left Reddit I used the tool to change all my comments to “u/Spez is a fucking loser”, then once all changed I used it to mass delete, then deleted my account.
I just checked and none of my comments resurfaced. Though maybe my contribution to Reddit was just not important in any useful way.